darkcomet | 1b306c2602d71c1b39a6972d2c8607e544edb2eeab17b423729a0c1b0f340f3f

General

Target

1b306c2602d71c1b39a6972d2c8607e544edb2eeab17b423729a0c1b0f340f3f.exe
Size

690KB
MD5

3a22854e13ec22a99aaf693ca81d2898
SHA1

8c59c824bc38b6aa0f2310752b4d6c96104f40a4
SHA256

1b306c2602d71c1b39a6972d2c8607e544edb2eeab17b423729a0c1b0f340f3f
SHA512

ca18233f933509679c74469a23487c5bb3f9e7a48aca9ba98e76d7201b679097c1af4aadf77ef3dbbee1d008d8806d418eb9c7c4fd0a85c38bf4b9d7b726a9fa

Score

10^/10

darkcomet all evasion persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

ALL

C2

78.179.195.97:1604

Mutex

DC_MUTEX-G42FP02

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
AYYXG1rhBfzD
install
true
offline_keylogger
true
persistence
true
reg_key
MicroUpdate

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:

1b306c2602d71c1b39a6972d2c8607e544edb2eeab17b423729a0c1b0f340f3f.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Users\\Admin\\AppData\\Local\\Temp\\MSDCSC\\msdcsc.exe"	1b306c2602d71c1b39a6972d2c8607e544edb2eeab17b423729a0c1b0f340f3f.exe

Executes dropped EXE 1 IoCs

Processes:

msdcsc.exe

pid process

3556 msdcsc.exe
Sets file to hidden 1 TTPs 2 IoCs
Modifies file attributes to stop it showing in Explorer etc.
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exeattrib.exe

pid process

4604 attrib.exe
4616 attrib.exe

pid	process
3556	msdcsc.exe

pid	process
4604	attrib.exe
4616	attrib.exe

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

Processes:

1b306c2602d71c1b39a6972d2c8607e544edb2eeab17b423729a0c1b0f340f3f.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Control Panel\International\Geo\Nation	1b306c2602d71c1b39a6972d2c8607e544edb2eeab17b423729a0c1b0f340f3f.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

1b306c2602d71c1b39a6972d2c8607e544edb2eeab17b423729a0c1b0f340f3f.exemsdcsc.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\AppData\\Local\\Temp\\MSDCSC\\msdcsc.exe"	1b306c2602d71c1b39a6972d2c8607e544edb2eeab17b423729a0c1b0f340f3f.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\AppData\\Local\\Temp\\MSDCSC\\msdcsc.exe"	msdcsc.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

Processes:

1b306c2602d71c1b39a6972d2c8607e544edb2eeab17b423729a0c1b0f340f3f.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	1b306c2602d71c1b39a6972d2c8607e544edb2eeab17b423729a0c1b0f340f3f.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

msdcsc.exe

pid process

3556 msdcsc.exe

pid	process
3556	msdcsc.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

Processes:

1b306c2602d71c1b39a6972d2c8607e544edb2eeab17b423729a0c1b0f340f3f.exemsdcsc.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	4532	1b306c2602d71c1b39a6972d2c8607e544edb2eeab17b423729a0c1b0f340f3f.exe
Token: SeSecurityPrivilege	4532	1b306c2602d71c1b39a6972d2c8607e544edb2eeab17b423729a0c1b0f340f3f.exe
Token: SeTakeOwnershipPrivilege	4532	1b306c2602d71c1b39a6972d2c8607e544edb2eeab17b423729a0c1b0f340f3f.exe
Token: SeLoadDriverPrivilege	4532	1b306c2602d71c1b39a6972d2c8607e544edb2eeab17b423729a0c1b0f340f3f.exe
Token: SeSystemProfilePrivilege	4532	1b306c2602d71c1b39a6972d2c8607e544edb2eeab17b423729a0c1b0f340f3f.exe
Token: SeSystemtimePrivilege	4532	1b306c2602d71c1b39a6972d2c8607e544edb2eeab17b423729a0c1b0f340f3f.exe
Token: SeProfSingleProcessPrivilege	4532	1b306c2602d71c1b39a6972d2c8607e544edb2eeab17b423729a0c1b0f340f3f.exe
Token: SeIncBasePriorityPrivilege	4532	1b306c2602d71c1b39a6972d2c8607e544edb2eeab17b423729a0c1b0f340f3f.exe
Token: SeCreatePagefilePrivilege	4532	1b306c2602d71c1b39a6972d2c8607e544edb2eeab17b423729a0c1b0f340f3f.exe
Token: SeBackupPrivilege	4532	1b306c2602d71c1b39a6972d2c8607e544edb2eeab17b423729a0c1b0f340f3f.exe
Token: SeRestorePrivilege	4532	1b306c2602d71c1b39a6972d2c8607e544edb2eeab17b423729a0c1b0f340f3f.exe
Token: SeShutdownPrivilege	4532	1b306c2602d71c1b39a6972d2c8607e544edb2eeab17b423729a0c1b0f340f3f.exe
Token: SeDebugPrivilege	4532	1b306c2602d71c1b39a6972d2c8607e544edb2eeab17b423729a0c1b0f340f3f.exe
Token: SeSystemEnvironmentPrivilege	4532	1b306c2602d71c1b39a6972d2c8607e544edb2eeab17b423729a0c1b0f340f3f.exe
Token: SeChangeNotifyPrivilege	4532	1b306c2602d71c1b39a6972d2c8607e544edb2eeab17b423729a0c1b0f340f3f.exe
Token: SeRemoteShutdownPrivilege	4532	1b306c2602d71c1b39a6972d2c8607e544edb2eeab17b423729a0c1b0f340f3f.exe
Token: SeUndockPrivilege	4532	1b306c2602d71c1b39a6972d2c8607e544edb2eeab17b423729a0c1b0f340f3f.exe
Token: SeManageVolumePrivilege	4532	1b306c2602d71c1b39a6972d2c8607e544edb2eeab17b423729a0c1b0f340f3f.exe
Token: SeImpersonatePrivilege	4532	1b306c2602d71c1b39a6972d2c8607e544edb2eeab17b423729a0c1b0f340f3f.exe
Token: SeCreateGlobalPrivilege	4532	1b306c2602d71c1b39a6972d2c8607e544edb2eeab17b423729a0c1b0f340f3f.exe
Token: 33	4532	1b306c2602d71c1b39a6972d2c8607e544edb2eeab17b423729a0c1b0f340f3f.exe
Token: 34	4532	1b306c2602d71c1b39a6972d2c8607e544edb2eeab17b423729a0c1b0f340f3f.exe
Token: 35	4532	1b306c2602d71c1b39a6972d2c8607e544edb2eeab17b423729a0c1b0f340f3f.exe
Token: 36	4532	1b306c2602d71c1b39a6972d2c8607e544edb2eeab17b423729a0c1b0f340f3f.exe
Token: SeIncreaseQuotaPrivilege	3556	msdcsc.exe
Token: SeSecurityPrivilege	3556	msdcsc.exe
Token: SeTakeOwnershipPrivilege	3556	msdcsc.exe
Token: SeLoadDriverPrivilege	3556	msdcsc.exe
Token: SeSystemProfilePrivilege	3556	msdcsc.exe
Token: SeSystemtimePrivilege	3556	msdcsc.exe
Token: SeProfSingleProcessPrivilege	3556	msdcsc.exe
Token: SeIncBasePriorityPrivilege	3556	msdcsc.exe
Token: SeCreatePagefilePrivilege	3556	msdcsc.exe
Token: SeBackupPrivilege	3556	msdcsc.exe
Token: SeRestorePrivilege	3556	msdcsc.exe
Token: SeShutdownPrivilege	3556	msdcsc.exe
Token: SeDebugPrivilege	3556	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	3556	msdcsc.exe
Token: SeChangeNotifyPrivilege	3556	msdcsc.exe
Token: SeRemoteShutdownPrivilege	3556	msdcsc.exe
Token: SeUndockPrivilege	3556	msdcsc.exe
Token: SeManageVolumePrivilege	3556	msdcsc.exe
Token: SeImpersonatePrivilege	3556	msdcsc.exe
Token: SeCreateGlobalPrivilege	3556	msdcsc.exe
Token: 33	3556	msdcsc.exe
Token: 34	3556	msdcsc.exe
Token: 35	3556	msdcsc.exe
Token: 36	3556	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

msdcsc.exe

pid process

3556 msdcsc.exe

pid	process
3556	msdcsc.exe

Suspicious use of WriteProcessMemory 37 IoCs

Processes:

1b306c2602d71c1b39a6972d2c8607e544edb2eeab17b423729a0c1b0f340f3f.execmd.execmd.exemsdcsc.exe

description	pid	process	target process
PID 4532 wrote to memory of 4520	4532	1b306c2602d71c1b39a6972d2c8607e544edb2eeab17b423729a0c1b0f340f3f.exe	cmd.exe
PID 4532 wrote to memory of 4520	4532	1b306c2602d71c1b39a6972d2c8607e544edb2eeab17b423729a0c1b0f340f3f.exe	cmd.exe
PID 4532 wrote to memory of 4520	4532	1b306c2602d71c1b39a6972d2c8607e544edb2eeab17b423729a0c1b0f340f3f.exe	cmd.exe
PID 4532 wrote to memory of 2796	4532	1b306c2602d71c1b39a6972d2c8607e544edb2eeab17b423729a0c1b0f340f3f.exe	cmd.exe
PID 4532 wrote to memory of 2796	4532	1b306c2602d71c1b39a6972d2c8607e544edb2eeab17b423729a0c1b0f340f3f.exe	cmd.exe
PID 4532 wrote to memory of 2796	4532	1b306c2602d71c1b39a6972d2c8607e544edb2eeab17b423729a0c1b0f340f3f.exe	cmd.exe
PID 4520 wrote to memory of 4604	4520	cmd.exe	attrib.exe
PID 4520 wrote to memory of 4604	4520	cmd.exe	attrib.exe
PID 4520 wrote to memory of 4604	4520	cmd.exe	attrib.exe
PID 2796 wrote to memory of 4616	2796	cmd.exe	attrib.exe
PID 2796 wrote to memory of 4616	2796	cmd.exe	attrib.exe
PID 2796 wrote to memory of 4616	2796	cmd.exe	attrib.exe
PID 4532 wrote to memory of 3556	4532	1b306c2602d71c1b39a6972d2c8607e544edb2eeab17b423729a0c1b0f340f3f.exe	msdcsc.exe
PID 4532 wrote to memory of 3556	4532	1b306c2602d71c1b39a6972d2c8607e544edb2eeab17b423729a0c1b0f340f3f.exe	msdcsc.exe
PID 4532 wrote to memory of 3556	4532	1b306c2602d71c1b39a6972d2c8607e544edb2eeab17b423729a0c1b0f340f3f.exe	msdcsc.exe
PID 3556 wrote to memory of 1512	3556	msdcsc.exe	notepad.exe
PID 3556 wrote to memory of 1512	3556	msdcsc.exe	notepad.exe
PID 3556 wrote to memory of 1512	3556	msdcsc.exe	notepad.exe
PID 3556 wrote to memory of 1512	3556	msdcsc.exe	notepad.exe
PID 3556 wrote to memory of 1512	3556	msdcsc.exe	notepad.exe
PID 3556 wrote to memory of 1512	3556	msdcsc.exe	notepad.exe
PID 3556 wrote to memory of 1512	3556	msdcsc.exe	notepad.exe
PID 3556 wrote to memory of 1512	3556	msdcsc.exe	notepad.exe
PID 3556 wrote to memory of 1512	3556	msdcsc.exe	notepad.exe
PID 3556 wrote to memory of 1512	3556	msdcsc.exe	notepad.exe
PID 3556 wrote to memory of 1512	3556	msdcsc.exe	notepad.exe
PID 3556 wrote to memory of 1512	3556	msdcsc.exe	notepad.exe
PID 3556 wrote to memory of 1512	3556	msdcsc.exe	notepad.exe
PID 3556 wrote to memory of 1512	3556	msdcsc.exe	notepad.exe
PID 3556 wrote to memory of 1512	3556	msdcsc.exe	notepad.exe
PID 3556 wrote to memory of 1512	3556	msdcsc.exe	notepad.exe
PID 3556 wrote to memory of 1512	3556	msdcsc.exe	notepad.exe
PID 3556 wrote to memory of 1512	3556	msdcsc.exe	notepad.exe
PID 3556 wrote to memory of 1512	3556	msdcsc.exe	notepad.exe
PID 3556 wrote to memory of 1512	3556	msdcsc.exe	notepad.exe
PID 3556 wrote to memory of 1512	3556	msdcsc.exe	notepad.exe
PID 3556 wrote to memory of 1512	3556	msdcsc.exe	notepad.exe

Views/modifies file attributes 1 TTPs 2 IoCs
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exeattrib.exe

pid process

4604 attrib.exe
4616 attrib.exe

pid	process
4604	attrib.exe
4616	attrib.exe

C:\Users\Admin\AppData\Local\Temp\1b306c2602d71c1b39a6972d2c8607e544edb2eeab17b423729a0c1b0f340f3f.exe
"C:\Users\Admin\AppData\Local\Temp\1b306c2602d71c1b39a6972d2c8607e544edb2eeab17b423729a0c1b0f340f3f.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:4532

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\1b306c2602d71c1b39a6972d2c8607e544edb2eeab17b423729a0c1b0f340f3f.exe" +s +h
2⤵
- Suspicious use of WriteProcessMemory
PID:4520

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp\1b306c2602d71c1b39a6972d2c8607e544edb2eeab17b423729a0c1b0f340f3f.exe" +s +h
3⤵
- Sets file to hidden
- Views/modifies file attributes
PID:4604

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:2796

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
3⤵
- Sets file to hidden
- Views/modifies file attributes
PID:4616

C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
"C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe"
2⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3556

C:\Windows\SysWOW64\notepad.exe
notepad
3⤵
PID:1512

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

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
Filesize
690KB

MD5
3a22854e13ec22a99aaf693ca81d2898

SHA1
8c59c824bc38b6aa0f2310752b4d6c96104f40a4

SHA256
1b306c2602d71c1b39a6972d2c8607e544edb2eeab17b423729a0c1b0f340f3f

SHA512
ca18233f933509679c74469a23487c5bb3f9e7a48aca9ba98e76d7201b679097c1af4aadf77ef3dbbee1d008d8806d418eb9c7c4fd0a85c38bf4b9d7b726a9fa

Download Submit
C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
Filesize
690KB

MD5
3a22854e13ec22a99aaf693ca81d2898

SHA1
8c59c824bc38b6aa0f2310752b4d6c96104f40a4

SHA256
1b306c2602d71c1b39a6972d2c8607e544edb2eeab17b423729a0c1b0f340f3f

SHA512
ca18233f933509679c74469a23487c5bb3f9e7a48aca9ba98e76d7201b679097c1af4aadf77ef3dbbee1d008d8806d418eb9c7c4fd0a85c38bf4b9d7b726a9fa

Download Submit
memory/1512-137-0x0000000000000000-mapping.dmp

Download
memory/2796-131-0x0000000000000000-mapping.dmp

Download
memory/3556-134-0x0000000000000000-mapping.dmp

Download
memory/4520-130-0x0000000000000000-mapping.dmp

Download
memory/4604-132-0x0000000000000000-mapping.dmp

Download
memory/4616-133-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads