44caliber | 14430e71914c83f8d1de8e66caa39d07ab782efb662245fb9eff6aa9fca7ce87

Analysis

max time kernel
50s
max time network
63s
platform
windows10-2004_x64
resource
win10v2004-20240730-en
resource tags

arch:x64arch:x86image:win10v2004-20240730-enlocale:en-usos:windows10-2004-x64system
submitted
02-08-2024 11:11

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Reason

Machine shutdown

Report Analysis Logs

General

Target

Loader V2.exe
Size

8.1MB
MD5

70a8a700260d1bf5d40214b4d16f2a4d
SHA1

888afda0f542f857c3627845abb17320c79348a3
SHA256

14430e71914c83f8d1de8e66caa39d07ab782efb662245fb9eff6aa9fca7ce87
SHA512

8d139e071d25106a30b3b00350fe08558bdaf884d039492611d90afd30c11ff08643560dc75ffaf7dafc0c53a96cf2b446239faf2fd8df9d0895d25b746d5d83
SSDEEP

196608:X7fP69w9dHnln76gtmUd74JVCbkQqeDDFloLRj/UVn5HIL6qG:Nvnln7RmUuJVuk0DDFWJCnVGs

Score

10^/10

44caliber xworm credential_access execution persistence rat spyware stealer trojan

Malware Config

Extracted

Family

xworm

147.185.221.20:13908

147.185.221.16:60401

Attributes

Install_directory
%AppData%
install_file
svhost.exe
telegram
https://api.telegram.org/bot7220907212:AAEOc5N7cpqGUVVvnWrzGHm8mdOrYN2e9mc/sendMessage?chat_id=6987872630

Extracted

Family

44caliber

https://discord.com/api/webhooks/1267250103538810911/_8BMipnmgDV4n-Uu_YmzeHrxrFFQPSAoBBDlwlDVhsDsk_31uQMADxZw-pq563wCO5KV

Signatures

44Caliber
An open source infostealer written in C#.
stealer 44caliber

Contains code to disable Windows Defender 1 IoCs

A .NET executable tasked with disabling Windows Defender capabilities such as realtime monitoring, blocking at first seen, etc.

resource	yara_rule
behavioral3/memory/5016-244-0x0000000002C80000-0x0000000002C8E000-memory.dmp	disable_win_def

Detect Xworm Payload 4 IoCs

resource	yara_rule
behavioral3/files/0x0008000000023420-17.dat	family_xworm
behavioral3/memory/2396-27-0x0000000000AE0000-0x0000000000B22000-memory.dmp	family_xworm
behavioral3/files/0x0007000000023422-33.dat	family_xworm
behavioral3/memory/5016-59-0x0000000000CF0000-0x0000000000D06000-memory.dmp	family_xworm

Xworm
Xworm is a remote access trojan written in C#.
trojan rat xworm
Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
credential_access stealer

Credentials from Web Browsers
T1555.003

Command and Scripting Interpreter: PowerShell 1 TTPs 4 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
3760	powershell.exe
2244	powershell.exe
4328	powershell.exe
228	powershell.exe

Checks computer location settings 2 TTPs 4 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-807826884-2440573969-3755798217-1000\Control Panel\International\Geo\Nation	Loader V2.exe
Key value queried	\REGISTRY\USER\S-1-5-21-807826884-2440573969-3755798217-1000\Control Panel\International\Geo\Nation	Loader.exe
Key value queried	\REGISTRY\USER\S-1-5-21-807826884-2440573969-3755798217-1000\Control Panel\International\Geo\Nation	loaderr.exe
Key value queried	\REGISTRY\USER\S-1-5-21-807826884-2440573969-3755798217-1000\Control Panel\International\Geo\Nation	injectdll.exe

Drops startup file 4 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.lnk	loaderr.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svhost.lnk	injectdll.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svhost.lnk	injectdll.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.lnk	loaderr.exe

Executes dropped EXE 4 IoCs

pid	Process
4036	Loader.exe
2396	injectdll.exe
5016	loaderr.exe
2104	fixer.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001
Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

Credentials In Files
T1552.001

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-807826884-2440573969-3755798217-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\svhost = "C:\\Users\\Admin\\AppData\\Roaming\\svhost.exe"	injectdll.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-807826884-2440573969-3755798217-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\svchost = "C:\\Users\\Admin\\AppData\\Local\\svchost.exe"	loaderr.exe

Looks up external IP address via web service 3 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
1	freegeoip.app
3	freegeoip.app
21	ip-api.com

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\Description\System\CentralProcessor\0	fixer.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	fixer.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
5000	schtasks.exe
3392	schtasks.exe

Suspicious behavior: EnumeratesProcesses 14 IoCs

pid	Process
2104	fixer.exe
2104	fixer.exe
2104	fixer.exe
2104	fixer.exe
3760	powershell.exe
3760	powershell.exe
2244	powershell.exe
2244	powershell.exe
4328	powershell.exe
4328	powershell.exe
228	powershell.exe
2396	injectdll.exe
228	powershell.exe
5016	loaderr.exe

Suspicious use of AdjustPrivilegeToken 10 IoCs

description	pid	Process
Token: SeDebugPrivilege	2396	injectdll.exe
Token: SeDebugPrivilege	5016	loaderr.exe
Token: SeDebugPrivilege	2104	fixer.exe
Token: SeDebugPrivilege	3760	powershell.exe
Token: SeDebugPrivilege	2244	powershell.exe
Token: SeDebugPrivilege	4328	powershell.exe
Token: SeDebugPrivilege	228	powershell.exe
Token: SeDebugPrivilege	2396	injectdll.exe
Token: SeDebugPrivilege	5016	loaderr.exe
Token: SeShutdownPrivilege	5016	loaderr.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2396	injectdll.exe
5016	loaderr.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 1828 wrote to memory of 4036	1828	Loader V2.exe	85
PID 1828 wrote to memory of 4036	1828	Loader V2.exe	85
PID 1828 wrote to memory of 2396	1828	Loader V2.exe	87
PID 1828 wrote to memory of 2396	1828	Loader V2.exe	87
PID 4036 wrote to memory of 5016	4036	Loader.exe	88
PID 4036 wrote to memory of 5016	4036	Loader.exe	88
PID 4036 wrote to memory of 2104	4036	Loader.exe	89
PID 4036 wrote to memory of 2104	4036	Loader.exe	89
PID 5016 wrote to memory of 3760	5016	loaderr.exe	91
PID 5016 wrote to memory of 3760	5016	loaderr.exe	91
PID 5016 wrote to memory of 2244	5016	loaderr.exe	93
PID 5016 wrote to memory of 2244	5016	loaderr.exe	93
PID 5016 wrote to memory of 4328	5016	loaderr.exe	95
PID 5016 wrote to memory of 4328	5016	loaderr.exe	95
PID 2396 wrote to memory of 5000	2396	injectdll.exe	97
PID 2396 wrote to memory of 5000	2396	injectdll.exe	97
PID 5016 wrote to memory of 228	5016	loaderr.exe	99
PID 5016 wrote to memory of 228	5016	loaderr.exe	99
PID 5016 wrote to memory of 3392	5016	loaderr.exe	101
PID 5016 wrote to memory of 3392	5016	loaderr.exe	101

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\Loader V2.exe
"C:\Users\Admin\AppData\Local\Temp\Loader V2.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1828
- C:\Users\Admin\AppData\Roaming\Loader.exe
  "C:\Users\Admin\AppData\Roaming\Loader.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - Suspicious use of WriteProcessMemory
  PID:4036
- - C:\Users\Admin\AppData\Local\Temp\loaderr.exe
    "C:\Users\Admin\AppData\Local\Temp\loaderr.exe"
    3⤵
    - Checks computer location settings
    - Drops startup file
    - Executes dropped EXE
    - Adds Run key to start application
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:5016
  - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\loaderr.exe'
      4⤵
      Command and Scripting Interpreter: PowerShell
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:3760
  - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'loaderr.exe'
      4⤵
      Command and Scripting Interpreter: PowerShell
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:2244
  - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\svchost.exe'
      4⤵
      Command and Scripting Interpreter: PowerShell
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:4328
  - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'svchost.exe'
      4⤵
      Command and Scripting Interpreter: PowerShell
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:228
  - - C:\Windows\System32\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "svchost" /tr "C:\Users\Admin\AppData\Local\svchost.exe"
      4⤵
      Scheduled Task/Job: Scheduled Task
      PID:3392
- - C:\Users\Admin\AppData\Local\Temp\fixer.exe
    "C:\Users\Admin\AppData\Local\Temp\fixer.exe"
    3⤵
    - Executes dropped EXE
    - Checks processor information in registry
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2104
- C:\Users\Admin\AppData\Roaming\injectdll.exe
  "C:\Users\Admin\AppData\Roaming\injectdll.exe"
  2⤵
  - Checks computer location settings
  - Drops startup file
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2396
- - C:\Windows\System32\schtasks.exe
    "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "svhost" /tr "C:\Users\Admin\AppData\Roaming\svhost.exe"
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:5000

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Modify Registry

T1112

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\ProgramData\44\Process.txt

Filesize
428B

MD5
5490111e1bf7dabc26d8af0ce95752a0

SHA1
955c42bf4b01baf9cb67a92b2bbcba53c774ea9f

SHA256
41480b895f17c7902aeb8ba563063678cb0a7b7f5e25bcac97162db7cd26cc55

SHA512
4927226b424c2ba664c54dafedaf7847f498235f48ce09e11e95cbfaf1da92fc609b81196d1a5768533d17741a551eea698327eb862f95ad63f94d1a83b4b3e4

Download Submit
C:\ProgramData\44\Process.txt

Filesize
1KB

MD5
3c73ef395ce0d28cc3912582b59ae4d3

SHA1
8cc75bcb5dd837096ede10a8e68809fc7c17e82f

SHA256
e024e81426fe160d534866cad3de3f24f880372ca146ec27e51a481946d010bb

SHA512
f3b5ca65b2cd0091f9cb5e01baf8f44338f28809c83952177f190ec6a6a2dddf7b5f3e7badc32e8be8535216e632058fb178a8ee3dd9927262b973c9861bd50d

Download Submit
C:\ProgramData\44\Process.txt

Filesize
1KB

MD5
7eec7bcb55da0a0c074b6f54acdef1bb

SHA1
71e5a4eb194ca113be7f1ac0d8f9d419a1a4de0b

SHA256
ec2940d2b0cdba39a12ff8f9f2c2ad58cca9ea323a1811434240f357df06947f

SHA512
f00871a5e15380334b189c953b11afea2c263ed52bc0eb9d23d4aafa815a52cab352da0bf05c0c4e83afb4d1e72a63e943773c0ecdd171df0214c209252621e9

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

Filesize
2KB

MD5
d85ba6ff808d9e5444a4b369f5bc2730

SHA1
31aa9d96590fff6981b315e0b391b575e4c0804a

SHA256
84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f

SHA512
8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
731e9e4becec0b1ef9caad4b3562d4b4

SHA1
6dffb77aba4e92ad5bd4b7c02fdee6f328bcd457

SHA256
71c7eca538938fa4d5b470fee41cfe43734e9beb9ae409d5b41111fa1a15c2d5

SHA512
841cf559ae5b0feec4be43018717641399b3602a553112e98b07d498f1a44169924466abc7e2313b8e8cf1c0fdc1bb7635e2818aab8269b0ef349a0ba0cd6ae5

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
34f595487e6bfd1d11c7de88ee50356a

SHA1
4caad088c15766cc0fa1f42009260e9a02f953bb

SHA256
0f9a4b52e01cb051052228a55d0515911b7ef5a8db3cf925528c746df511424d

SHA512
10976c5deaf9fac449e703e852c3b08d099f430de2d7c7b8e2525c35d63e28b890e5aab63feff9b20bca0aaf9f35a3ba411aee3fbeee9ea59f90ed25bd617a0b

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
d65ebc84c6b0b52901fb46f5e2b83ab5

SHA1
d036a0c3eb9e1616d0f7f5ca41171060c13a3095

SHA256
d45581b0807a0d04a70ec75e3e4575e73f148e5b4e0d3d325dfbd6400a4bfbd1

SHA512
88ac232e7702ebd53788cf8429d266ae367111bfccf4bc9d40ead25b552347521458ca60d320e2775b5d2edcaf8501251cb2db68b38dc000ac50463fb80865be

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_pbs1gqwc.ihz.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\fixer.exe

Filesize
274KB

MD5
88505913c2c75f796c9a021aab2d356d

SHA1
5b5c06998d3e200c21c77ea4efaeaecdc7344e78

SHA256
62e414e990e80c8203955b0e32948ddc64903b80a462c339f1babfb03e641204

SHA512
6fa46be04c2693ea164fe52ddf3cca0bdafd1ab34d8c0f1c2bf3d361c6042f45375343f59e9474ded6718f8177a4f7eb19fddccd95f7fbb87aad12358b2d6905

Download Submit
C:\Users\Admin\AppData\Local\Temp\loaderr.exe

Filesize
65KB

MD5
95f8f28f5a8503461db6804cda9c4934

SHA1
81c0a30e498093d41948777135bbd407c7611cda

SHA256
aa40b9b929868482be1daae474d7c93426cd049f844c956865709ff8b7f240c2

SHA512
5c3460372a6640a98dd1b1d34a03b951ec4a8942e9065475e982a207881f290aedc3b51fe73c0da4c527e222addd1de2be7ba541e82287e43e16fc544ab34461

Download Submit
C:\Users\Admin\AppData\Roaming\Loader.exe

Filesize
7.6MB

MD5
aa16f3774491b600121545a5f194cefc

SHA1
c872fe765ecff1dada8378ad8a12cd5cf0425219

SHA256
c0a2b824a0fd05854818bfb81b02bc6178db3f8519807b15d844580099428e1d

SHA512
8b50e7c6eca25ecc2196fbfaf42079873e3c532a90e8d8b691fb594da3e067593f86f0d6488d0c314a27d78519f33fcbfb4532f811997891d55a47d582e1b3a8

Download Submit
C:\Users\Admin\AppData\Roaming\injectdll.exe

Filesize
244KB

MD5
74ffb0d60d647dd6ad8d00c1bee48011

SHA1
4c8a707a33b35b78f374c66d59f9c2314c20b25f

SHA256
b481f1e0cfe25e5f19da0a0333c78661bf5c75c0b1c616ff4aaaa07aed31efd1

SHA512
fc667f4560d6b19a9a4f37eb0e66c751eb348ffc0db69c7d0bd733dfd2df2dfdadc7b780cd93686350444cc14a54283bafe3afec611bcac3ad0239eda659f46c

Download Submit
memory/1828-1-0x00000000001E0000-0x00000000009F8000-memory.dmp

Filesize
8.1MB

Download
memory/1828-0-0x00007FFE51FE3000-0x00007FFE51FE5000-memory.dmp

Filesize
8KB

Download
memory/2104-58-0x000002879FC90000-0x000002879FCDA000-memory.dmp

Filesize
296KB

Download
memory/2396-27-0x0000000000AE0000-0x0000000000B22000-memory.dmp

Filesize
264KB

Download
memory/2396-187-0x00007FFE51FE0000-0x00007FFE52AA1000-memory.dmp

Filesize
10.8MB

Download
memory/2396-242-0x00007FFE51FE0000-0x00007FFE52AA1000-memory.dmp

Filesize
10.8MB

Download
memory/2396-243-0x00007FFE51FE0000-0x00007FFE52AA1000-memory.dmp

Filesize
10.8MB

Download
memory/2396-29-0x00007FFE51FE0000-0x00007FFE52AA1000-memory.dmp

Filesize
10.8MB

Download
memory/3760-197-0x000001C1FE250000-0x000001C1FE272000-memory.dmp

Filesize
136KB

Download
memory/4036-97-0x00007FFE51FE0000-0x00007FFE52AA1000-memory.dmp

Filesize
10.8MB

Download
memory/4036-25-0x0000000000310000-0x0000000000AA4000-memory.dmp

Filesize
7.6MB

Download
memory/4036-26-0x00007FFE51FE0000-0x00007FFE52AA1000-memory.dmp

Filesize
10.8MB

Download
memory/5016-59-0x0000000000CF0000-0x0000000000D06000-memory.dmp

Filesize
88KB

Download
memory/5016-244-0x0000000002C80000-0x0000000002C8E000-memory.dmp

Filesize
56KB

Download

Analysis

Sharing

Errors

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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