44caliber | a669abcbdbf3f91fcfdd6cb2d55c9ba68a020c11aaca6ddf0c5bbb5c234ed023

General

Target

EZTEAM0.0.7.exe
Size

7.8MB
MD5

79e6e964ad3a7e5b8008dc44553b784c
SHA1

63684848b7c4530aa24c96c6223fddd7e1417702
SHA256

a669abcbdbf3f91fcfdd6cb2d55c9ba68a020c11aaca6ddf0c5bbb5c234ed023
SHA512

7e7d9aa748766b12473b178ee95c728f266e86d14110deaf9eb1937ff5343a0b7aaf0c69388eb4a918a236e19b95a87035b20792e04627ce45c630bd02c45013
SSDEEP

196608:UuUTi2pHbUmUHtahgF8/LQS9fjvSG7LUIGmrl:gwmuahk8/LbxvSG7D1Z

Score

10^/10

44caliber xworm rat spyware stealer trojan

Malware Config

Extracted

Family

44caliber

C2

https://discord.com/api/webhooks/1233119648527159317/Az86qBZQwyED_alc1sGO6UWR18PzIJCJX0PM3XdL1VTOwZPXr0B4Rc6-GqAkKUjg4Jn2

Extracted

Family

xworm

C2

phentermine-partial.gl.at.ply.gg:36969

Attributes

Install_directory
%AppData%
install_file
Client.exe
telegram
https://api.telegram.org/bot7080511499:AAGFFOA3S2vvwmEy85SIMhKHrMsAdBoLR2Y

Signatures

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

Detect Xworm Payload 3 IoCs

resource	yara_rule
behavioral2/files/0x000b000000023401-4.dat	family_xworm
behavioral2/memory/1796-22-0x0000000000F40000-0x0000000000F58000-memory.dmp	family_xworm
behavioral2/memory/2124-26-0x00000294C9FD0000-0x00000294C9FE0000-memory.dmp	family_xworm

Xworm
Xworm is a remote access trojan written in C#.
trojan rat xworm

Checks computer location settings 2 TTPs 2 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-1-5-21-259785868-298165991-4178590326-1000\Control Panel\International\Geo\Nation	EZTEAM0.0.7.exe
Key value queried	\REGISTRY\USER\S-1-5-21-259785868-298165991-4178590326-1000\Control Panel\International\Geo\Nation	EZTEAM.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 4 IoCs

pid	Process
1796	EZTEAM.exe
2124	Chrome.exe
3672	Client.exe
3372	Client.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

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
11	freegeoip.app
12	freegeoip.app
37	ip-api.com

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

System Information Discovery
T1082

Creates scheduled task(s) 1 TTPs 1 IoCs

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

persistence

Scheduled Task/Job

T1053

pid	Process
1772	schtasks.exe

Suspicious behavior: EnumeratesProcesses 16 IoCs

pid	Process
2124	Chrome.exe
2124	Chrome.exe
2124	Chrome.exe
2712	powershell.exe
2712	powershell.exe
2712	powershell.exe
4056	powershell.exe
4056	powershell.exe
4056	powershell.exe
4984	powershell.exe
4984	powershell.exe
4984	powershell.exe
1560	powershell.exe
1560	powershell.exe
1560	powershell.exe
1796	EZTEAM.exe

Suspicious use of AdjustPrivilegeToken 9 IoCs

description	pid	Process
Token: SeDebugPrivilege	1796	EZTEAM.exe
Token: SeDebugPrivilege	2124	Chrome.exe
Token: SeDebugPrivilege	2712	powershell.exe
Token: SeDebugPrivilege	4056	powershell.exe
Token: SeDebugPrivilege	4984	powershell.exe
Token: SeDebugPrivilege	1560	powershell.exe
Token: SeDebugPrivilege	1796	EZTEAM.exe
Token: SeDebugPrivilege	3672	Client.exe
Token: SeDebugPrivilege	3372	Client.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1796	EZTEAM.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 1276 wrote to memory of 1796	1276	EZTEAM0.0.7.exe	87
PID 1276 wrote to memory of 1796	1276	EZTEAM0.0.7.exe	87
PID 1276 wrote to memory of 2124	1276	EZTEAM0.0.7.exe	88
PID 1276 wrote to memory of 2124	1276	EZTEAM0.0.7.exe	88
PID 1796 wrote to memory of 2712	1796	EZTEAM.exe	100
PID 1796 wrote to memory of 2712	1796	EZTEAM.exe	100
PID 1796 wrote to memory of 4056	1796	EZTEAM.exe	103
PID 1796 wrote to memory of 4056	1796	EZTEAM.exe	103
PID 1796 wrote to memory of 4984	1796	EZTEAM.exe	105
PID 1796 wrote to memory of 4984	1796	EZTEAM.exe	105
PID 1796 wrote to memory of 1560	1796	EZTEAM.exe	107
PID 1796 wrote to memory of 1560	1796	EZTEAM.exe	107
PID 1796 wrote to memory of 1772	1796	EZTEAM.exe	110
PID 1796 wrote to memory of 1772	1796	EZTEAM.exe	110

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\EZTEAM0.0.7.exe
"C:\Users\Admin\AppData\Local\Temp\EZTEAM0.0.7.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1276
- C:\Users\Admin\AppData\Local\Temp\EZTEAM.exe
  "C:\Users\Admin\AppData\Local\Temp\EZTEAM.exe"
  2⤵
  - Checks computer location settings
  - Drops startup file
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1796
- - 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\EZTEAM.exe'
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2712
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'EZTEAM.exe'
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4056
- - 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\Roaming\Client.exe'
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4984
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Client.exe'
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1560
- - C:\Windows\System32\schtasks.exe
    "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "Client" /tr "C:\Users\Admin\AppData\Roaming\Client.exe"
    3⤵
    - Creates scheduled task(s)
    PID:1772
- C:\Users\Admin\AppData\Local\Temp\Chrome.exe
  "C:\Users\Admin\AppData\Local\Temp\Chrome.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2124

C:\Users\Admin\AppData\Roaming\Client.exe
C:\Users\Admin\AppData\Roaming\Client.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3672

C:\Users\Admin\AppData\Roaming\Client.exe
C:\Users\Admin\AppData\Roaming\Client.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3372

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Persistence

Scheduled Task/Job

1

T1053

Privilege Escalation

Scheduled Task/Job

1

T1053

Defense Evasion

Credential Access

Unsecured Credentials

2

T1552

Credentials In Files

2

T1552.001

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Data from Local System

2

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\Client.exe.log

Filesize
654B

MD5
2ff39f6c7249774be85fd60a8f9a245e

SHA1
684ff36b31aedc1e587c8496c02722c6698c1c4e

SHA256
e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced

SHA512
1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1

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
9bc110200117a3752313ca2acaf8a9e1

SHA1
fda6b7da2e7b0175b391475ca78d1b4cf2147cd3

SHA256
c88e4bbb64f7fa31429ebe82c1cf07785c44486f37576f783a26ac856e02a4eb

SHA512
1f1af32aa18a8cbfcc65b0d4fb7e6ca2705f125eaa85789e981ee68b90c64522e954825abf460d4b4f97567715dfae8d9b0a25a4d54d10bc4c257c472f2e80fb

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

Filesize
944B

MD5
d28a889fd956d5cb3accfbaf1143eb6f

SHA1
157ba54b365341f8ff06707d996b3635da8446f7

SHA256
21e5d7ccf80a293e6ba30ed728846ca19c929c52b96e2c8d34e27cd2234f1d45

SHA512
0b6d88deb9be85722e6a78d5886d49f2caf407a59e128d2b4ed74c1356f9928c40048a62731959f2460e9ff9d9feee311043d2a37abe3bb92c2b76a44281478c

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

Filesize
944B

MD5
0256bd284691ed0fc502ef3c8a7e58dc

SHA1
dcdf69dc8ca8bf068f65d20ef1563bbe283e2413

SHA256
e2fb83098e114084f51ed7187334f861ce670051046c39f338928296ca9a49cf

SHA512
c5b29c1e0a15ddb68b0579848066774fa7cdc6f35087bbbf47c05a5c0dcc1eb3e61b2ddadfbded8c1ed9820e637596a9f08a97db8fb18000d168e6b159060c42

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

Filesize
303KB

MD5
0806acefdfc7d5602fb29b696edb0c64

SHA1
ff456af5fecb477cc00fffbaa4c206d18a62ee6a

SHA256
beecfc72917651d131028b60ab9a5dfb0b8e5e4ec60248321637048e06c524b7

SHA512
aa9bf80089dd565e2a4fa0af41f42c033c8093f83e52020b6c86c4cafeb49b627d712de89625adfbbc537d60f8fa0525b3c02164f4e34900c64ca3fd4fee134e

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

Filesize
74KB

MD5
ef36a6fed3a555b4aee8288dbe0143ee

SHA1
b31be44e9e4767d7df123d742f32802aa343d0ec

SHA256
4ab06ce2922222f591b776a0c6c332952ff24bbcf6f757692a6ed5f9b45cc67a

SHA512
04d87228b20401ab5c7d36be3a217c09a413c671a28c016fa82fe5b19cf7b5579f15bf74212bd6a5fd141bb4e29897dc754bda20896323f8f60fc55a3e47a09c

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_d5kttnwj.dc3.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1276-23-0x0000000000400000-0x0000000000BC9000-memory.dmp

Filesize
7.8MB

Download
memory/1796-22-0x0000000000F40000-0x0000000000F58000-memory.dmp

Filesize
96KB

Download
memory/1796-59-0x000000001BC60000-0x000000001BC70000-memory.dmp

Filesize
64KB

Download
memory/1796-25-0x00007FFEB5B70000-0x00007FFEB6631000-memory.dmp

Filesize
10.8MB

Download
memory/1796-110-0x00007FFEB5B70000-0x00007FFEB6631000-memory.dmp

Filesize
10.8MB

Download
memory/1796-111-0x000000001BC60000-0x000000001BC70000-memory.dmp

Filesize
64KB

Download
memory/2124-58-0x00007FFEB5B70000-0x00007FFEB6631000-memory.dmp

Filesize
10.8MB

Download
memory/2124-26-0x00000294C9FD0000-0x00000294C9FE0000-memory.dmp

Filesize
64KB

Download
memory/2124-29-0x00007FFEB5B70000-0x00007FFEB6631000-memory.dmp

Filesize
10.8MB

Download
memory/2124-24-0x00000294AFA40000-0x00000294AFA92000-memory.dmp

Filesize
328KB

Download
memory/2712-65-0x000001FDE3820000-0x000001FDE3842000-memory.dmp

Filesize
136KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads