darkcomet | b734e86bf0004fc28d0461931d180ac6dee413a8c0ce9de25a6e52c92f9933e4

Analysis

max time kernel
151s
max time network
189s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
26/11/2022, 02:09

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General

Target

b734e86bf0004fc28d0461931d180ac6dee413a8c0ce9de25a6e52c92f9933e4.exe
Size

413KB
MD5

76b457fa5ae1c6a25e31482690516e76
SHA1

fc07725fe87907bae71b5b9110634244cefee8de
SHA256

b734e86bf0004fc28d0461931d180ac6dee413a8c0ce9de25a6e52c92f9933e4
SHA512

4e87f901b69c3f2b59ae25afb8853e0fe9c686235c73e18a488ab736d7d6b57ac3759f41cdeaa81c7c69ed0ae4f4bf66326c4d18a5e525fb9fb3ea8bd7a1d17c
SSDEEP

6144:6cNYS996KFifeVjBpeExgVTFSXFoMc5RhCaL37ft:6cW7KEZlPzCy37V

Score

10^/10

darkcomet guest16 persistence rat trojan upx

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

teetertootor.no-ip.org:1604

Mutex

DC_MUTEX-JL0SAE3

Attributes

InstallPath
BossWarZ\BossWarZ.exe
gencode
RW32BHwn9J8G
install
true
offline_keylogger
true
persistence
true
reg_key
BossWarZUpdate

Signatures

Darkcomet
DarkComet is a remote access trojan (RAT) developed by Jean-Pierre Lesueur.
trojan rat darkcomet

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\ProgramData\\Microsoft\\Windows\\Start Menu\\BossWarZ\\BossWarZ.exe"	b734e86bf0004fc28d0461931d180ac6dee413a8c0ce9de25a6e52c92f9933e4.exe

Executes dropped EXE 1 IoCs

pid	Process
1756	BossWarZ.exe

UPX packed file 6 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/1132-132-0x0000000000400000-0x0000000000508000-memory.dmp	upx
behavioral2/files/0x0009000000022df5-134.dat	upx
behavioral2/files/0x0009000000022df5-135.dat	upx
behavioral2/memory/1756-137-0x0000000000400000-0x0000000000508000-memory.dmp	upx
behavioral2/memory/1132-138-0x0000000000400000-0x0000000000508000-memory.dmp	upx
behavioral2/memory/1756-139-0x0000000000400000-0x0000000000508000-memory.dmp	upx

Checks computer location settings 2 TTPs 1 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-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	b734e86bf0004fc28d0461931d180ac6dee413a8c0ce9de25a6e52c92f9933e4.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\BossWarZUpdate = "C:\\ProgramData\\Microsoft\\Windows\\Start Menu\\BossWarZ\\BossWarZ.exe"	b734e86bf0004fc28d0461931d180ac6dee413a8c0ce9de25a6e52c92f9933e4.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\BossWarZUpdate = "C:\\ProgramData\\Microsoft\\Windows\\Start Menu\\BossWarZ\\BossWarZ.exe"	BossWarZ.exe

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

System Information Discovery
T1082

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	b734e86bf0004fc28d0461931d180ac6dee413a8c0ce9de25a6e52c92f9933e4.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	1132	b734e86bf0004fc28d0461931d180ac6dee413a8c0ce9de25a6e52c92f9933e4.exe
Token: SeSecurityPrivilege	1132	b734e86bf0004fc28d0461931d180ac6dee413a8c0ce9de25a6e52c92f9933e4.exe
Token: SeTakeOwnershipPrivilege	1132	b734e86bf0004fc28d0461931d180ac6dee413a8c0ce9de25a6e52c92f9933e4.exe
Token: SeLoadDriverPrivilege	1132	b734e86bf0004fc28d0461931d180ac6dee413a8c0ce9de25a6e52c92f9933e4.exe
Token: SeSystemProfilePrivilege	1132	b734e86bf0004fc28d0461931d180ac6dee413a8c0ce9de25a6e52c92f9933e4.exe
Token: SeSystemtimePrivilege	1132	b734e86bf0004fc28d0461931d180ac6dee413a8c0ce9de25a6e52c92f9933e4.exe
Token: SeProfSingleProcessPrivilege	1132	b734e86bf0004fc28d0461931d180ac6dee413a8c0ce9de25a6e52c92f9933e4.exe
Token: SeIncBasePriorityPrivilege	1132	b734e86bf0004fc28d0461931d180ac6dee413a8c0ce9de25a6e52c92f9933e4.exe
Token: SeCreatePagefilePrivilege	1132	b734e86bf0004fc28d0461931d180ac6dee413a8c0ce9de25a6e52c92f9933e4.exe
Token: SeBackupPrivilege	1132	b734e86bf0004fc28d0461931d180ac6dee413a8c0ce9de25a6e52c92f9933e4.exe
Token: SeRestorePrivilege	1132	b734e86bf0004fc28d0461931d180ac6dee413a8c0ce9de25a6e52c92f9933e4.exe
Token: SeShutdownPrivilege	1132	b734e86bf0004fc28d0461931d180ac6dee413a8c0ce9de25a6e52c92f9933e4.exe
Token: SeDebugPrivilege	1132	b734e86bf0004fc28d0461931d180ac6dee413a8c0ce9de25a6e52c92f9933e4.exe
Token: SeSystemEnvironmentPrivilege	1132	b734e86bf0004fc28d0461931d180ac6dee413a8c0ce9de25a6e52c92f9933e4.exe
Token: SeChangeNotifyPrivilege	1132	b734e86bf0004fc28d0461931d180ac6dee413a8c0ce9de25a6e52c92f9933e4.exe
Token: SeRemoteShutdownPrivilege	1132	b734e86bf0004fc28d0461931d180ac6dee413a8c0ce9de25a6e52c92f9933e4.exe
Token: SeUndockPrivilege	1132	b734e86bf0004fc28d0461931d180ac6dee413a8c0ce9de25a6e52c92f9933e4.exe
Token: SeManageVolumePrivilege	1132	b734e86bf0004fc28d0461931d180ac6dee413a8c0ce9de25a6e52c92f9933e4.exe
Token: SeImpersonatePrivilege	1132	b734e86bf0004fc28d0461931d180ac6dee413a8c0ce9de25a6e52c92f9933e4.exe
Token: SeCreateGlobalPrivilege	1132	b734e86bf0004fc28d0461931d180ac6dee413a8c0ce9de25a6e52c92f9933e4.exe
Token: 33	1132	b734e86bf0004fc28d0461931d180ac6dee413a8c0ce9de25a6e52c92f9933e4.exe
Token: 34	1132	b734e86bf0004fc28d0461931d180ac6dee413a8c0ce9de25a6e52c92f9933e4.exe
Token: 35	1132	b734e86bf0004fc28d0461931d180ac6dee413a8c0ce9de25a6e52c92f9933e4.exe
Token: 36	1132	b734e86bf0004fc28d0461931d180ac6dee413a8c0ce9de25a6e52c92f9933e4.exe
Token: SeIncreaseQuotaPrivilege	1756	BossWarZ.exe
Token: SeSecurityPrivilege	1756	BossWarZ.exe
Token: SeTakeOwnershipPrivilege	1756	BossWarZ.exe
Token: SeLoadDriverPrivilege	1756	BossWarZ.exe
Token: SeSystemProfilePrivilege	1756	BossWarZ.exe
Token: SeSystemtimePrivilege	1756	BossWarZ.exe
Token: SeProfSingleProcessPrivilege	1756	BossWarZ.exe
Token: SeIncBasePriorityPrivilege	1756	BossWarZ.exe
Token: SeCreatePagefilePrivilege	1756	BossWarZ.exe
Token: SeBackupPrivilege	1756	BossWarZ.exe
Token: SeRestorePrivilege	1756	BossWarZ.exe
Token: SeShutdownPrivilege	1756	BossWarZ.exe
Token: SeDebugPrivilege	1756	BossWarZ.exe
Token: SeSystemEnvironmentPrivilege	1756	BossWarZ.exe
Token: SeChangeNotifyPrivilege	1756	BossWarZ.exe
Token: SeRemoteShutdownPrivilege	1756	BossWarZ.exe
Token: SeUndockPrivilege	1756	BossWarZ.exe
Token: SeManageVolumePrivilege	1756	BossWarZ.exe
Token: SeImpersonatePrivilege	1756	BossWarZ.exe
Token: SeCreateGlobalPrivilege	1756	BossWarZ.exe
Token: 33	1756	BossWarZ.exe
Token: 34	1756	BossWarZ.exe
Token: 35	1756	BossWarZ.exe
Token: 36	1756	BossWarZ.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1756	BossWarZ.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1132 wrote to memory of 1756	1132	b734e86bf0004fc28d0461931d180ac6dee413a8c0ce9de25a6e52c92f9933e4.exe	77
PID 1132 wrote to memory of 1756	1132	b734e86bf0004fc28d0461931d180ac6dee413a8c0ce9de25a6e52c92f9933e4.exe	77
PID 1132 wrote to memory of 1756	1132	b734e86bf0004fc28d0461931d180ac6dee413a8c0ce9de25a6e52c92f9933e4.exe	77
PID 1756 wrote to memory of 3960	1756	BossWarZ.exe	78
PID 1756 wrote to memory of 3960	1756	BossWarZ.exe	78
PID 1756 wrote to memory of 3960	1756	BossWarZ.exe	78
PID 1756 wrote to memory of 2148	1756	BossWarZ.exe	79
PID 1756 wrote to memory of 2148	1756	BossWarZ.exe	79

C:\Users\Admin\AppData\Local\Temp\b734e86bf0004fc28d0461931d180ac6dee413a8c0ce9de25a6e52c92f9933e4.exe
"C:\Users\Admin\AppData\Local\Temp\b734e86bf0004fc28d0461931d180ac6dee413a8c0ce9de25a6e52c92f9933e4.exe"
1⤵
- Modifies WinLogon for persistence
- Checks computer location settings
- Adds Run key to start application
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1132
- C:\ProgramData\Microsoft\Windows\Start Menu\BossWarZ\BossWarZ.exe
  "C:\ProgramData\Microsoft\Windows\Start Menu\BossWarZ\BossWarZ.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1756
- - C:\Program Files (x86)\Internet Explorer\iexplore.exe
    "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
    3⤵
    PID:3960
- - C:\Windows\explorer.exe
    "C:\Windows\explorer.exe"
    3⤵
    PID:2148

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Winlogon Helper DLL

T1004

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\ProgramData\Microsoft\Windows\Start Menu\BossWarZ\BossWarZ.exe

Filesize
413KB

MD5
76b457fa5ae1c6a25e31482690516e76

SHA1
fc07725fe87907bae71b5b9110634244cefee8de

SHA256
b734e86bf0004fc28d0461931d180ac6dee413a8c0ce9de25a6e52c92f9933e4

SHA512
4e87f901b69c3f2b59ae25afb8853e0fe9c686235c73e18a488ab736d7d6b57ac3759f41cdeaa81c7c69ed0ae4f4bf66326c4d18a5e525fb9fb3ea8bd7a1d17c

Download Submit
C:\ProgramData\Microsoft\Windows\Start Menu\BossWarZ\BossWarZ.exe

Filesize
413KB

MD5
76b457fa5ae1c6a25e31482690516e76

SHA1
fc07725fe87907bae71b5b9110634244cefee8de

SHA256
b734e86bf0004fc28d0461931d180ac6dee413a8c0ce9de25a6e52c92f9933e4

SHA512
4e87f901b69c3f2b59ae25afb8853e0fe9c686235c73e18a488ab736d7d6b57ac3759f41cdeaa81c7c69ed0ae4f4bf66326c4d18a5e525fb9fb3ea8bd7a1d17c

Download Submit
memory/1132-132-0x0000000000400000-0x0000000000508000-memory.dmp

Filesize
1.0MB

Download
memory/1132-138-0x0000000000400000-0x0000000000508000-memory.dmp

Filesize
1.0MB

Download
memory/1756-137-0x0000000000400000-0x0000000000508000-memory.dmp

Filesize
1.0MB

Download
memory/1756-139-0x0000000000400000-0x0000000000508000-memory.dmp

Filesize
1.0MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads