darkcomet | 074193e6032463916cca5208b1dd4eaea758dfb41684888438e01cc7c8bf795f

General

Target

074193e6032463916cca5208b1dd4eaea758dfb41684888438e01cc7c8bf795f.exe
Size

318KB
MD5

a49f8963a4c3949b06e4301caa2de435
SHA1

2784038e702ea56c70b56d0ba2dab6dac5512746
SHA256

074193e6032463916cca5208b1dd4eaea758dfb41684888438e01cc7c8bf795f
SHA512

f3b43f49bb38c7ff98eae0657a272d1b877a76586b0226969f8c6f5063b80fcce675ad49fa727b9dd68d32b300c8472ceb3e2ca0d38c629fdd8aded948b9208d

Score

10^/10

darkcomet evasion persistence rat trojan upx

Malware Config

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

Processes:

074193e6032463916cca5208b1dd4eaea758dfb41684888438e01cc7c8bf795f.exe

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\\S1\\updater.exe"	074193e6032463916cca5208b1dd4eaea758dfb41684888438e01cc7c8bf795f.exe

Disables RegEdit via registry modification
evasion
Disables Task Manager via registry modification
evasion
Executes dropped EXE 1 IoCs

Processes:

updater.exe

pid process

3380 updater.exe
Sets file to hidden 1 TTPs
Modifies file attributes to stop it showing in Explorer etc.
evasion

Hidden Files and Directories
T1158

pid	process
3380	updater.exe

UPX packed file 2 IoCs

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

upx

Processes:

resource	yara_rule
C:\ProgramData\Microsoft\Windows\Start Menu\S1\updater.exe	upx
C:\ProgramData\Microsoft\Windows\Start Menu\S1\updater.exe	upx

Deletes itself 1 IoCs

Processes:

notepad.exe

pid process

2524 notepad.exe

pid	process
2524	notepad.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

074193e6032463916cca5208b1dd4eaea758dfb41684888438e01cc7c8bf795f.exeupdater.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Windows\CurrentVersion\Run\Windows Firewall = "C:\\ProgramData\\Microsoft\\Windows\\Start Menu\\S1\\updater.exe"	074193e6032463916cca5208b1dd4eaea758dfb41684888438e01cc7c8bf795f.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Windows\CurrentVersion\Run\Windows Firewall = "C:\\ProgramData\\Microsoft\\Windows\\Start Menu\\S1\\updater.exe"	updater.exe

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

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 48 IoCs

Processes:

074193e6032463916cca5208b1dd4eaea758dfb41684888438e01cc7c8bf795f.exeupdater.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	640	074193e6032463916cca5208b1dd4eaea758dfb41684888438e01cc7c8bf795f.exe
Token: SeSecurityPrivilege	640	074193e6032463916cca5208b1dd4eaea758dfb41684888438e01cc7c8bf795f.exe
Token: SeTakeOwnershipPrivilege	640	074193e6032463916cca5208b1dd4eaea758dfb41684888438e01cc7c8bf795f.exe
Token: SeLoadDriverPrivilege	640	074193e6032463916cca5208b1dd4eaea758dfb41684888438e01cc7c8bf795f.exe
Token: SeSystemProfilePrivilege	640	074193e6032463916cca5208b1dd4eaea758dfb41684888438e01cc7c8bf795f.exe
Token: SeSystemtimePrivilege	640	074193e6032463916cca5208b1dd4eaea758dfb41684888438e01cc7c8bf795f.exe
Token: SeProfSingleProcessPrivilege	640	074193e6032463916cca5208b1dd4eaea758dfb41684888438e01cc7c8bf795f.exe
Token: SeIncBasePriorityPrivilege	640	074193e6032463916cca5208b1dd4eaea758dfb41684888438e01cc7c8bf795f.exe
Token: SeCreatePagefilePrivilege	640	074193e6032463916cca5208b1dd4eaea758dfb41684888438e01cc7c8bf795f.exe
Token: SeBackupPrivilege	640	074193e6032463916cca5208b1dd4eaea758dfb41684888438e01cc7c8bf795f.exe
Token: SeRestorePrivilege	640	074193e6032463916cca5208b1dd4eaea758dfb41684888438e01cc7c8bf795f.exe
Token: SeShutdownPrivilege	640	074193e6032463916cca5208b1dd4eaea758dfb41684888438e01cc7c8bf795f.exe
Token: SeDebugPrivilege	640	074193e6032463916cca5208b1dd4eaea758dfb41684888438e01cc7c8bf795f.exe
Token: SeSystemEnvironmentPrivilege	640	074193e6032463916cca5208b1dd4eaea758dfb41684888438e01cc7c8bf795f.exe
Token: SeChangeNotifyPrivilege	640	074193e6032463916cca5208b1dd4eaea758dfb41684888438e01cc7c8bf795f.exe
Token: SeRemoteShutdownPrivilege	640	074193e6032463916cca5208b1dd4eaea758dfb41684888438e01cc7c8bf795f.exe
Token: SeUndockPrivilege	640	074193e6032463916cca5208b1dd4eaea758dfb41684888438e01cc7c8bf795f.exe
Token: SeManageVolumePrivilege	640	074193e6032463916cca5208b1dd4eaea758dfb41684888438e01cc7c8bf795f.exe
Token: SeImpersonatePrivilege	640	074193e6032463916cca5208b1dd4eaea758dfb41684888438e01cc7c8bf795f.exe
Token: SeCreateGlobalPrivilege	640	074193e6032463916cca5208b1dd4eaea758dfb41684888438e01cc7c8bf795f.exe
Token: 33	640	074193e6032463916cca5208b1dd4eaea758dfb41684888438e01cc7c8bf795f.exe
Token: 34	640	074193e6032463916cca5208b1dd4eaea758dfb41684888438e01cc7c8bf795f.exe
Token: 35	640	074193e6032463916cca5208b1dd4eaea758dfb41684888438e01cc7c8bf795f.exe
Token: 36	640	074193e6032463916cca5208b1dd4eaea758dfb41684888438e01cc7c8bf795f.exe
Token: SeIncreaseQuotaPrivilege	3380	updater.exe
Token: SeSecurityPrivilege	3380	updater.exe
Token: SeTakeOwnershipPrivilege	3380	updater.exe
Token: SeLoadDriverPrivilege	3380	updater.exe
Token: SeSystemProfilePrivilege	3380	updater.exe
Token: SeSystemtimePrivilege	3380	updater.exe
Token: SeProfSingleProcessPrivilege	3380	updater.exe
Token: SeIncBasePriorityPrivilege	3380	updater.exe
Token: SeCreatePagefilePrivilege	3380	updater.exe
Token: SeBackupPrivilege	3380	updater.exe
Token: SeRestorePrivilege	3380	updater.exe
Token: SeShutdownPrivilege	3380	updater.exe
Token: SeDebugPrivilege	3380	updater.exe
Token: SeSystemEnvironmentPrivilege	3380	updater.exe
Token: SeChangeNotifyPrivilege	3380	updater.exe
Token: SeRemoteShutdownPrivilege	3380	updater.exe
Token: SeUndockPrivilege	3380	updater.exe
Token: SeManageVolumePrivilege	3380	updater.exe
Token: SeImpersonatePrivilege	3380	updater.exe
Token: SeCreateGlobalPrivilege	3380	updater.exe
Token: 33	3380	updater.exe
Token: 34	3380	updater.exe
Token: 35	3380	updater.exe
Token: 36	3380	updater.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

updater.exe

pid process

3380 updater.exe

pid	process
3380	updater.exe

Suspicious use of WriteProcessMemory 54 IoCs

Processes:

074193e6032463916cca5208b1dd4eaea758dfb41684888438e01cc7c8bf795f.execmd.execmd.exeupdater.exe

description	pid	process	target process
PID 640 wrote to memory of 3832	640	074193e6032463916cca5208b1dd4eaea758dfb41684888438e01cc7c8bf795f.exe	cmd.exe
PID 640 wrote to memory of 3832	640	074193e6032463916cca5208b1dd4eaea758dfb41684888438e01cc7c8bf795f.exe	cmd.exe
PID 640 wrote to memory of 3832	640	074193e6032463916cca5208b1dd4eaea758dfb41684888438e01cc7c8bf795f.exe	cmd.exe
PID 640 wrote to memory of 3852	640	074193e6032463916cca5208b1dd4eaea758dfb41684888438e01cc7c8bf795f.exe	cmd.exe
PID 640 wrote to memory of 3852	640	074193e6032463916cca5208b1dd4eaea758dfb41684888438e01cc7c8bf795f.exe	cmd.exe
PID 640 wrote to memory of 3852	640	074193e6032463916cca5208b1dd4eaea758dfb41684888438e01cc7c8bf795f.exe	cmd.exe
PID 640 wrote to memory of 2524	640	074193e6032463916cca5208b1dd4eaea758dfb41684888438e01cc7c8bf795f.exe	notepad.exe
PID 640 wrote to memory of 2524	640	074193e6032463916cca5208b1dd4eaea758dfb41684888438e01cc7c8bf795f.exe	notepad.exe
PID 640 wrote to memory of 2524	640	074193e6032463916cca5208b1dd4eaea758dfb41684888438e01cc7c8bf795f.exe	notepad.exe
PID 640 wrote to memory of 2524	640	074193e6032463916cca5208b1dd4eaea758dfb41684888438e01cc7c8bf795f.exe	notepad.exe
PID 640 wrote to memory of 2524	640	074193e6032463916cca5208b1dd4eaea758dfb41684888438e01cc7c8bf795f.exe	notepad.exe
PID 640 wrote to memory of 2524	640	074193e6032463916cca5208b1dd4eaea758dfb41684888438e01cc7c8bf795f.exe	notepad.exe
PID 640 wrote to memory of 2524	640	074193e6032463916cca5208b1dd4eaea758dfb41684888438e01cc7c8bf795f.exe	notepad.exe
PID 640 wrote to memory of 2524	640	074193e6032463916cca5208b1dd4eaea758dfb41684888438e01cc7c8bf795f.exe	notepad.exe
PID 640 wrote to memory of 2524	640	074193e6032463916cca5208b1dd4eaea758dfb41684888438e01cc7c8bf795f.exe	notepad.exe
PID 640 wrote to memory of 2524	640	074193e6032463916cca5208b1dd4eaea758dfb41684888438e01cc7c8bf795f.exe	notepad.exe
PID 640 wrote to memory of 2524	640	074193e6032463916cca5208b1dd4eaea758dfb41684888438e01cc7c8bf795f.exe	notepad.exe
PID 640 wrote to memory of 2524	640	074193e6032463916cca5208b1dd4eaea758dfb41684888438e01cc7c8bf795f.exe	notepad.exe
PID 640 wrote to memory of 2524	640	074193e6032463916cca5208b1dd4eaea758dfb41684888438e01cc7c8bf795f.exe	notepad.exe
PID 640 wrote to memory of 2524	640	074193e6032463916cca5208b1dd4eaea758dfb41684888438e01cc7c8bf795f.exe	notepad.exe
PID 640 wrote to memory of 2524	640	074193e6032463916cca5208b1dd4eaea758dfb41684888438e01cc7c8bf795f.exe	notepad.exe
PID 640 wrote to memory of 2524	640	074193e6032463916cca5208b1dd4eaea758dfb41684888438e01cc7c8bf795f.exe	notepad.exe
PID 640 wrote to memory of 2524	640	074193e6032463916cca5208b1dd4eaea758dfb41684888438e01cc7c8bf795f.exe	notepad.exe
PID 3852 wrote to memory of 416	3852	cmd.exe	attrib.exe
PID 3852 wrote to memory of 416	3852	cmd.exe	attrib.exe
PID 3852 wrote to memory of 416	3852	cmd.exe	attrib.exe
PID 3832 wrote to memory of 4056	3832	cmd.exe	attrib.exe
PID 3832 wrote to memory of 4056	3832	cmd.exe	attrib.exe
PID 3832 wrote to memory of 4056	3832	cmd.exe	attrib.exe
PID 640 wrote to memory of 3380	640	074193e6032463916cca5208b1dd4eaea758dfb41684888438e01cc7c8bf795f.exe	updater.exe
PID 640 wrote to memory of 3380	640	074193e6032463916cca5208b1dd4eaea758dfb41684888438e01cc7c8bf795f.exe	updater.exe
PID 640 wrote to memory of 3380	640	074193e6032463916cca5208b1dd4eaea758dfb41684888438e01cc7c8bf795f.exe	updater.exe
PID 3380 wrote to memory of 3908	3380	updater.exe	notepad.exe
PID 3380 wrote to memory of 3908	3380	updater.exe	notepad.exe
PID 3380 wrote to memory of 3908	3380	updater.exe	notepad.exe
PID 3380 wrote to memory of 3908	3380	updater.exe	notepad.exe
PID 3380 wrote to memory of 3908	3380	updater.exe	notepad.exe
PID 3380 wrote to memory of 3908	3380	updater.exe	notepad.exe
PID 3380 wrote to memory of 3908	3380	updater.exe	notepad.exe
PID 3380 wrote to memory of 3908	3380	updater.exe	notepad.exe
PID 3380 wrote to memory of 3908	3380	updater.exe	notepad.exe
PID 3380 wrote to memory of 3908	3380	updater.exe	notepad.exe
PID 3380 wrote to memory of 3908	3380	updater.exe	notepad.exe
PID 3380 wrote to memory of 3908	3380	updater.exe	notepad.exe
PID 3380 wrote to memory of 3908	3380	updater.exe	notepad.exe
PID 3380 wrote to memory of 3908	3380	updater.exe	notepad.exe
PID 3380 wrote to memory of 3908	3380	updater.exe	notepad.exe
PID 3380 wrote to memory of 3908	3380	updater.exe	notepad.exe
PID 3380 wrote to memory of 3908	3380	updater.exe	notepad.exe
PID 3380 wrote to memory of 3908	3380	updater.exe	notepad.exe
PID 3380 wrote to memory of 3908	3380	updater.exe	notepad.exe
PID 3380 wrote to memory of 3908	3380	updater.exe	notepad.exe
PID 3380 wrote to memory of 3908	3380	updater.exe	notepad.exe
PID 3380 wrote to memory of 3908	3380	updater.exe	notepad.exe

Views/modifies file attributes 1 TTPs 2 IoCs
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exeattrib.exe

pid process

4056 attrib.exe
416 attrib.exe

pid	process
4056	attrib.exe
416	attrib.exe

C:\Users\Admin\AppData\Local\Temp\074193e6032463916cca5208b1dd4eaea758dfb41684888438e01cc7c8bf795f.exe
"C:\Users\Admin\AppData\Local\Temp\074193e6032463916cca5208b1dd4eaea758dfb41684888438e01cc7c8bf795f.exe"
1⤵
- Modifies WinLogon for persistence
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:640

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\074193e6032463916cca5208b1dd4eaea758dfb41684888438e01cc7c8bf795f.exe" +s +h
2⤵
- Suspicious use of WriteProcessMemory
PID:3832

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp\074193e6032463916cca5208b1dd4eaea758dfb41684888438e01cc7c8bf795f.exe" +s +h
3⤵
- Views/modifies file attributes
PID:4056

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
2⤵
- Suspicious use of WriteProcessMemory
PID:3852

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
3⤵
- Views/modifies file attributes
PID:416

C:\Windows\SysWOW64\notepad.exe
notepad
2⤵
- Deletes itself
PID:2524

C:\ProgramData\Microsoft\Windows\Start Menu\S1\updater.exe
"C:\ProgramData\Microsoft\Windows\Start Menu\S1\updater.exe"
2⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3380

C:\Windows\SysWOW64\notepad.exe
notepad
3⤵
PID:3908

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Winlogon Helper DLL

1

T1004

Hidden Files and Directories

2

T1158

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

2

T1112

Hidden Files and Directories

2

T1158

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\ProgramData\Microsoft\Windows\Start Menu\S1\updater.exe
MD5
a49f8963a4c3949b06e4301caa2de435

SHA1
2784038e702ea56c70b56d0ba2dab6dac5512746

SHA256
074193e6032463916cca5208b1dd4eaea758dfb41684888438e01cc7c8bf795f

SHA512
f3b43f49bb38c7ff98eae0657a272d1b877a76586b0226969f8c6f5063b80fcce675ad49fa727b9dd68d32b300c8472ceb3e2ca0d38c629fdd8aded948b9208d

Download Submit
C:\ProgramData\Microsoft\Windows\Start Menu\S1\updater.exe
MD5
a49f8963a4c3949b06e4301caa2de435

SHA1
2784038e702ea56c70b56d0ba2dab6dac5512746

SHA256
074193e6032463916cca5208b1dd4eaea758dfb41684888438e01cc7c8bf795f

SHA512
f3b43f49bb38c7ff98eae0657a272d1b877a76586b0226969f8c6f5063b80fcce675ad49fa727b9dd68d32b300c8472ceb3e2ca0d38c629fdd8aded948b9208d

Download Submit
memory/416-118-0x0000000000000000-mapping.dmp

Download
memory/640-114-0x00000000007B0000-0x00000000007B1000-memory.dmp

Filesize
4KB

Download
memory/2524-126-0x00000000004F0000-0x000000000059E000-memory.dmp

Filesize
696KB

Download
memory/2524-117-0x0000000000000000-mapping.dmp

Download
memory/3380-120-0x0000000000000000-mapping.dmp

Download
memory/3380-124-0x0000000000650000-0x0000000000651000-memory.dmp

Filesize
4KB

Download
memory/3832-115-0x0000000000000000-mapping.dmp

Download
memory/3852-116-0x0000000000000000-mapping.dmp

Download
memory/3908-123-0x0000000000000000-mapping.dmp

Download
memory/3908-125-0x0000000003300000-0x0000000003301000-memory.dmp

Filesize
4KB

Download
memory/4056-119-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

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Downloads