44caliber | a669abcbdbf3f91fcfdd6cb2d55c9ba68a020c11aaca6ddf0c5bbb5c234ed023

Reason

Machine shutdown

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

xworm

C2

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

Attributes

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

Extracted

Family

44caliber

C2

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

Signatures

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

Detect Xworm Payload 2 IoCs

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\EZTEAM.exe	family_xworm
behavioral1/memory/316-11-0x0000000000AC0000-0x0000000000AD8000-memory.dmp	family_xworm

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

Drops startup file 2 IoCs

Processes:

EZTEAM.exe

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

Processes:

EZTEAM.exeChrome.exeClient.exeClient.exe

pid process

316 EZTEAM.exe
2456 Chrome.exe
3076 Client.exe
3952 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.

Processes:

flow ioc

1 freegeoip.app
2 freegeoip.app
7 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

Processes:

schtasks.exe

pid process

3924 schtasks.exe

pid	process
316	EZTEAM.exe
2456	Chrome.exe
3076	Client.exe
3952	Client.exe

flow	ioc
1	freegeoip.app
2	freegeoip.app
7	ip-api.com

pid	process
3924	schtasks.exe

Modifies data under HKEY_USERS 15 IoCs

Processes:

LogonUI.exe

description	ioc	process
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Themes\History	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\AccentColor = "4292311040"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationAfterglowBalance = "10"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\AccentColorMenu = "4292311040"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationAfterglow = "3288365271"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationBlurBalance = "1"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\EnableWindowColorization = "1"	LogonUI.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\AccentPalette = a6d8ff0076b9ed00429ce3000078d700005a9e000042750000264200f7630c00	LogonUI.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationGlassAttribute = "1"	LogonUI.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Themes\History\AutoColor = "0"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\StartColorMenu = "4288567808"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationColor = "3288365271"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationColorBalance = "89"	LogonUI.exe

Suspicious behavior: EnumeratesProcesses 16 IoCs

Processes:

Chrome.exepowershell.exepowershell.exepowershell.exepowershell.exeEZTEAM.exe

pid	process
2456	Chrome.exe
2456	Chrome.exe
2456	Chrome.exe
4324	powershell.exe
4324	powershell.exe
4324	powershell.exe
4060	powershell.exe
4060	powershell.exe
4060	powershell.exe
4316	powershell.exe
4316	powershell.exe
4316	powershell.exe
5108	powershell.exe
5108	powershell.exe
5108	powershell.exe
316	EZTEAM.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

Processes:

Chrome.exeEZTEAM.exepowershell.exepowershell.exepowershell.exe

description	pid	process
Token: SeDebugPrivilege	2456	Chrome.exe
Token: SeDebugPrivilege	316	EZTEAM.exe
Token: SeDebugPrivilege	4324	powershell.exe
Token: SeIncreaseQuotaPrivilege	4324	powershell.exe
Token: SeSecurityPrivilege	4324	powershell.exe
Token: SeTakeOwnershipPrivilege	4324	powershell.exe
Token: SeLoadDriverPrivilege	4324	powershell.exe
Token: SeSystemProfilePrivilege	4324	powershell.exe
Token: SeSystemtimePrivilege	4324	powershell.exe
Token: SeProfSingleProcessPrivilege	4324	powershell.exe
Token: SeIncBasePriorityPrivilege	4324	powershell.exe
Token: SeCreatePagefilePrivilege	4324	powershell.exe
Token: SeBackupPrivilege	4324	powershell.exe
Token: SeRestorePrivilege	4324	powershell.exe
Token: SeShutdownPrivilege	4324	powershell.exe
Token: SeDebugPrivilege	4324	powershell.exe
Token: SeSystemEnvironmentPrivilege	4324	powershell.exe
Token: SeRemoteShutdownPrivilege	4324	powershell.exe
Token: SeUndockPrivilege	4324	powershell.exe
Token: SeManageVolumePrivilege	4324	powershell.exe
Token: 33	4324	powershell.exe
Token: 34	4324	powershell.exe
Token: 35	4324	powershell.exe
Token: 36	4324	powershell.exe
Token: SeDebugPrivilege	4060	powershell.exe
Token: SeIncreaseQuotaPrivilege	4060	powershell.exe
Token: SeSecurityPrivilege	4060	powershell.exe
Token: SeTakeOwnershipPrivilege	4060	powershell.exe
Token: SeLoadDriverPrivilege	4060	powershell.exe
Token: SeSystemProfilePrivilege	4060	powershell.exe
Token: SeSystemtimePrivilege	4060	powershell.exe
Token: SeProfSingleProcessPrivilege	4060	powershell.exe
Token: SeIncBasePriorityPrivilege	4060	powershell.exe
Token: SeCreatePagefilePrivilege	4060	powershell.exe
Token: SeBackupPrivilege	4060	powershell.exe
Token: SeRestorePrivilege	4060	powershell.exe
Token: SeShutdownPrivilege	4060	powershell.exe
Token: SeDebugPrivilege	4060	powershell.exe
Token: SeSystemEnvironmentPrivilege	4060	powershell.exe
Token: SeRemoteShutdownPrivilege	4060	powershell.exe
Token: SeUndockPrivilege	4060	powershell.exe
Token: SeManageVolumePrivilege	4060	powershell.exe
Token: 33	4060	powershell.exe
Token: 34	4060	powershell.exe
Token: 35	4060	powershell.exe
Token: 36	4060	powershell.exe
Token: SeDebugPrivilege	4316	powershell.exe
Token: SeIncreaseQuotaPrivilege	4316	powershell.exe
Token: SeSecurityPrivilege	4316	powershell.exe
Token: SeTakeOwnershipPrivilege	4316	powershell.exe
Token: SeLoadDriverPrivilege	4316	powershell.exe
Token: SeSystemProfilePrivilege	4316	powershell.exe
Token: SeSystemtimePrivilege	4316	powershell.exe
Token: SeProfSingleProcessPrivilege	4316	powershell.exe
Token: SeIncBasePriorityPrivilege	4316	powershell.exe
Token: SeCreatePagefilePrivilege	4316	powershell.exe
Token: SeBackupPrivilege	4316	powershell.exe
Token: SeRestorePrivilege	4316	powershell.exe
Token: SeShutdownPrivilege	4316	powershell.exe
Token: SeDebugPrivilege	4316	powershell.exe
Token: SeSystemEnvironmentPrivilege	4316	powershell.exe
Token: SeRemoteShutdownPrivilege	4316	powershell.exe
Token: SeUndockPrivilege	4316	powershell.exe
Token: SeManageVolumePrivilege	4316	powershell.exe

Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

EZTEAM.exeLogonUI.exe

pid process

316 EZTEAM.exe
2508 LogonUI.exe

pid	process
316	EZTEAM.exe
2508	LogonUI.exe

Suspicious use of WriteProcessMemory 16 IoCs

Processes:

EZTEAM0.0.7.exeEZTEAM.exe

description	pid	process	target process
PID 2316 wrote to memory of 316	2316	EZTEAM0.0.7.exe	EZTEAM.exe
PID 2316 wrote to memory of 316	2316	EZTEAM0.0.7.exe	EZTEAM.exe
PID 2316 wrote to memory of 2456	2316	EZTEAM0.0.7.exe	Chrome.exe
PID 2316 wrote to memory of 2456	2316	EZTEAM0.0.7.exe	Chrome.exe
PID 316 wrote to memory of 4324	316	EZTEAM.exe	powershell.exe
PID 316 wrote to memory of 4324	316	EZTEAM.exe	powershell.exe
PID 316 wrote to memory of 4060	316	EZTEAM.exe	powershell.exe
PID 316 wrote to memory of 4060	316	EZTEAM.exe	powershell.exe
PID 316 wrote to memory of 4316	316	EZTEAM.exe	powershell.exe
PID 316 wrote to memory of 4316	316	EZTEAM.exe	powershell.exe
PID 316 wrote to memory of 5108	316	EZTEAM.exe	powershell.exe
PID 316 wrote to memory of 5108	316	EZTEAM.exe	powershell.exe
PID 316 wrote to memory of 3924	316	EZTEAM.exe	schtasks.exe
PID 316 wrote to memory of 3924	316	EZTEAM.exe	schtasks.exe
PID 316 wrote to memory of 3696	316	EZTEAM.exe	shutdown.exe
PID 316 wrote to memory of 3696	316	EZTEAM.exe	shutdown.exe

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⤵
- Suspicious use of WriteProcessMemory
PID:2316

C:\Users\Admin\AppData\Local\Temp\EZTEAM.exe
"C:\Users\Admin\AppData\Local\Temp\EZTEAM.exe"
2⤵
- Drops startup file
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:316

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:4324

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:4060

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:4316

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
PID:5108

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:3924

C:\Windows\SYSTEM32\shutdown.exe
shutdown.exe /f /s /t 0
3⤵
PID:3696

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:2456

C:\Users\Admin\AppData\Roaming\Client.exe
C:\Users\Admin\AppData\Roaming\Client.exe
1⤵
- Executes dropped EXE
PID:3076

C:\Users\Admin\AppData\Roaming\Client.exe
C:\Users\Admin\AppData\Roaming\Client.exe
1⤵
- Executes dropped EXE
PID:3952

C:\Windows\system32\LogonUI.exe
"LogonUI.exe" /flags:0x0 /state0:0xa3aeb055 /state1:0x41c64e6d
1⤵
- Modifies data under HKEY_USERS
- Suspicious use of SetWindowsHookEx
PID:2508

Network

MITRE ATT&CK Matrix ATT&CK v13

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

System Information Discovery

1

T1082

Query Registry

1

T1012

Lateral Movement

Collection

Data from Local System

2

T1005

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\Client.exe.log
Filesize
654B

MD5
16c5fce5f7230eea11598ec11ed42862

SHA1
75392d4824706090f5e8907eee1059349c927600

SHA256
87ba77c13905298acbac72be90949c4fe0755b6eff9777615aa37f252515f151

SHA512
153edd6da59beea6cc411ed7383c32916425d6ebb65f04c65aab7c1d6b25443d143aa8449aa92149de0ad8a975f6ecaa60f9f7574536eec6b38fe5fd3a6c6adc

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log
Filesize
3KB

MD5
8592ba100a78835a6b94d5949e13dfc1

SHA1
63e901200ab9a57c7dd4c078d7f75dcd3b357020

SHA256
fdd7d9def6f9f0c0f2e60dbc8a2d1999071cd7d3095e9e087bb1cda7a614ac3c

SHA512
87f98e6cb61b2a2a7d65710c4d33881d89715eb7a06e00d492259f35c3902498baabffc5886be0ec5a14312ad4c262e3fc40cd3a5cb91701af0fb229726b88c3

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Filesize
1KB

MD5
b80a81594ffa1b64734a7129001b86c0

SHA1
7f8ae1f96e4cd01f380725ba016dcc9c6f895d0d

SHA256
880c71e0afcecbdf06e7ce0d18910d9d30ec0c713786312ea5967714787b47ae

SHA512
861ef0ab2684b2c1dd2865785b769fa99de6f5993e01a16aa888dc4a1897dd33a797e9f0122349a7b25c5a59018b4053644bed0a788873da67b41c2532210236

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Filesize
1KB

MD5
c3f9d9b09eae3bf9556439f980934542

SHA1
e82e861a6663add6de57b6095350de2573a321d0

SHA256
a7d05403c31736de5f5e4263d3ce117afad1c0e47ce15c7b117ae879758e781d

SHA512
f7892d525c55575028f939cd2e6a79cfd612dadd0d0ac0031470eec063b06f7438b4ec701d15490464c2e83771ab5146b52a2d908e831ab0d990ca6430afa1aa

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Filesize
1KB

MD5
7761083a943350311a61bcc2ae6ed043

SHA1
3ec7c5ece57bca33c1cfa6d4bc9c80143bb0fb3d

SHA256
565b5a0ea53df465644f28003c87e0b60b7c463730b18ebd489192825bac2bd8

SHA512
061bdd9b2cd678ff4e833b51e73ea3cf446347cc03aee6c80f9d692af9be466230d80dbefb7861d793ac667339e6bbdfff5d7177a4e36d35b23149f13941e197

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_whjrx5xw.5zc.ps1
Filesize
1B

MD5
c4ca4238a0b923820dcc509a6f75849b

SHA1
356a192b7913b04c54574d18c28d46e6395428ab

SHA256
6b86b273ff34fce19d6b804eff5a3f5747ada4eaa22f1d49c01e52ddb7875b4b

SHA512
4dff4ea340f0a823f15d3f4f01ab62eae0e5da579ccb851f8db9dfe84c58b2b37b89903a740e1ee172da793a6e79d560e5f7f9bd058a12a280433ed6fa46510a

Download Submit
memory/316-32-0x00007FF8F61E0000-0x00007FF8F6BCC000-memory.dmp

Filesize
9.9MB

Download
memory/316-11-0x0000000000AC0000-0x0000000000AD8000-memory.dmp

Filesize
96KB

Download
memory/316-217-0x00007FF8F61E0000-0x00007FF8F6BCC000-memory.dmp

Filesize
9.9MB

Download
memory/316-218-0x000000001B770000-0x000000001B77C000-memory.dmp

Filesize
48KB

Download
memory/316-222-0x000000001D300000-0x000000001D650000-memory.dmp

Filesize
3.3MB

Download
memory/316-223-0x00007FF8F61E0000-0x00007FF8F6BCC000-memory.dmp

Filesize
9.9MB

Download
memory/2316-12-0x0000000000400000-0x0000000000BC9000-memory.dmp

Filesize
7.8MB

Download
memory/2456-33-0x00007FF8F61E0000-0x00007FF8F6BCC000-memory.dmp

Filesize
9.9MB

Download
memory/2456-173-0x00007FF8F61E0000-0x00007FF8F6BCC000-memory.dmp

Filesize
9.9MB

Download
memory/2456-10-0x0000027051C20000-0x0000027051C72000-memory.dmp

Filesize
328KB

Download
memory/4324-41-0x00000193629B0000-0x0000019362A26000-memory.dmp

Filesize
472KB

Download
memory/4324-38-0x0000019362800000-0x0000019362822000-memory.dmp

Filesize
136KB

Download

Analysis

Sharing

Errors

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads