darkcomet | 72b401594c6d7674f905f8fcc187e2c8525f6b2c1c9682fafd5e1191d6a617cd

General

Target

72b401594c6d7674f905f8fcc187e2c8525f6b2c1c9682fafd5e1191d6a617cd.exe
Size

383KB
MD5

4ae30f28f1acb06cc303afb107fb5242
SHA1

017ed0e76ed7daee651f88c81df2f43c986a773c
SHA256

72b401594c6d7674f905f8fcc187e2c8525f6b2c1c9682fafd5e1191d6a617cd
SHA512

015292b13b5712357e9b7f33cb9097884b15578598c066a1fc5a272b8cddcfffe42bc6a9fa499ffae43ce245967ce005234ead3b50cf304f84f3666f06de8f16
SSDEEP

6144:/YpRNQuZi9+neeKGn4SBIz0Bpv/8Ykw+aS053PuLupGT1CXINTB8LgAFAl7B9w:wp/1Fxn+G8S+aL3GapyfB2GR

Score

10^/10

darkcomet hf evasion persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

HF

C2

xavian.no-ip.org:1604

Mutex

DC_MUTEX-KT2FTNQ

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
VKesLADk0mNy
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:

72b401594c6d7674f905f8fcc187e2c8525f6b2c1c9682fafd5e1191d6a617cd.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	72b401594c6d7674f905f8fcc187e2c8525f6b2c1c9682fafd5e1191d6a617cd.exe

Executes dropped EXE 1 IoCs

Processes:

msdcsc.exe

pid process

1896 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

1700 attrib.exe
1928 attrib.exe

pid	process
1896	msdcsc.exe

pid	process
1700	attrib.exe
1928	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:

72b401594c6d7674f905f8fcc187e2c8525f6b2c1c9682fafd5e1191d6a617cd.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation	72b401594c6d7674f905f8fcc187e2c8525f6b2c1c9682fafd5e1191d6a617cd.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

72b401594c6d7674f905f8fcc187e2c8525f6b2c1c9682fafd5e1191d6a617cd.exemsdcsc.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	72b401594c6d7674f905f8fcc187e2c8525f6b2c1c9682fafd5e1191d6a617cd.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\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

Suspicious use of AdjustPrivilegeToken 48 IoCs

Processes:

72b401594c6d7674f905f8fcc187e2c8525f6b2c1c9682fafd5e1191d6a617cd.exemsdcsc.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	1692	72b401594c6d7674f905f8fcc187e2c8525f6b2c1c9682fafd5e1191d6a617cd.exe
Token: SeSecurityPrivilege	1692	72b401594c6d7674f905f8fcc187e2c8525f6b2c1c9682fafd5e1191d6a617cd.exe
Token: SeTakeOwnershipPrivilege	1692	72b401594c6d7674f905f8fcc187e2c8525f6b2c1c9682fafd5e1191d6a617cd.exe
Token: SeLoadDriverPrivilege	1692	72b401594c6d7674f905f8fcc187e2c8525f6b2c1c9682fafd5e1191d6a617cd.exe
Token: SeSystemProfilePrivilege	1692	72b401594c6d7674f905f8fcc187e2c8525f6b2c1c9682fafd5e1191d6a617cd.exe
Token: SeSystemtimePrivilege	1692	72b401594c6d7674f905f8fcc187e2c8525f6b2c1c9682fafd5e1191d6a617cd.exe
Token: SeProfSingleProcessPrivilege	1692	72b401594c6d7674f905f8fcc187e2c8525f6b2c1c9682fafd5e1191d6a617cd.exe
Token: SeIncBasePriorityPrivilege	1692	72b401594c6d7674f905f8fcc187e2c8525f6b2c1c9682fafd5e1191d6a617cd.exe
Token: SeCreatePagefilePrivilege	1692	72b401594c6d7674f905f8fcc187e2c8525f6b2c1c9682fafd5e1191d6a617cd.exe
Token: SeBackupPrivilege	1692	72b401594c6d7674f905f8fcc187e2c8525f6b2c1c9682fafd5e1191d6a617cd.exe
Token: SeRestorePrivilege	1692	72b401594c6d7674f905f8fcc187e2c8525f6b2c1c9682fafd5e1191d6a617cd.exe
Token: SeShutdownPrivilege	1692	72b401594c6d7674f905f8fcc187e2c8525f6b2c1c9682fafd5e1191d6a617cd.exe
Token: SeDebugPrivilege	1692	72b401594c6d7674f905f8fcc187e2c8525f6b2c1c9682fafd5e1191d6a617cd.exe
Token: SeSystemEnvironmentPrivilege	1692	72b401594c6d7674f905f8fcc187e2c8525f6b2c1c9682fafd5e1191d6a617cd.exe
Token: SeChangeNotifyPrivilege	1692	72b401594c6d7674f905f8fcc187e2c8525f6b2c1c9682fafd5e1191d6a617cd.exe
Token: SeRemoteShutdownPrivilege	1692	72b401594c6d7674f905f8fcc187e2c8525f6b2c1c9682fafd5e1191d6a617cd.exe
Token: SeUndockPrivilege	1692	72b401594c6d7674f905f8fcc187e2c8525f6b2c1c9682fafd5e1191d6a617cd.exe
Token: SeManageVolumePrivilege	1692	72b401594c6d7674f905f8fcc187e2c8525f6b2c1c9682fafd5e1191d6a617cd.exe
Token: SeImpersonatePrivilege	1692	72b401594c6d7674f905f8fcc187e2c8525f6b2c1c9682fafd5e1191d6a617cd.exe
Token: SeCreateGlobalPrivilege	1692	72b401594c6d7674f905f8fcc187e2c8525f6b2c1c9682fafd5e1191d6a617cd.exe
Token: 33	1692	72b401594c6d7674f905f8fcc187e2c8525f6b2c1c9682fafd5e1191d6a617cd.exe
Token: 34	1692	72b401594c6d7674f905f8fcc187e2c8525f6b2c1c9682fafd5e1191d6a617cd.exe
Token: 35	1692	72b401594c6d7674f905f8fcc187e2c8525f6b2c1c9682fafd5e1191d6a617cd.exe
Token: 36	1692	72b401594c6d7674f905f8fcc187e2c8525f6b2c1c9682fafd5e1191d6a617cd.exe
Token: SeIncreaseQuotaPrivilege	1896	msdcsc.exe
Token: SeSecurityPrivilege	1896	msdcsc.exe
Token: SeTakeOwnershipPrivilege	1896	msdcsc.exe
Token: SeLoadDriverPrivilege	1896	msdcsc.exe
Token: SeSystemProfilePrivilege	1896	msdcsc.exe
Token: SeSystemtimePrivilege	1896	msdcsc.exe
Token: SeProfSingleProcessPrivilege	1896	msdcsc.exe
Token: SeIncBasePriorityPrivilege	1896	msdcsc.exe
Token: SeCreatePagefilePrivilege	1896	msdcsc.exe
Token: SeBackupPrivilege	1896	msdcsc.exe
Token: SeRestorePrivilege	1896	msdcsc.exe
Token: SeShutdownPrivilege	1896	msdcsc.exe
Token: SeDebugPrivilege	1896	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	1896	msdcsc.exe
Token: SeChangeNotifyPrivilege	1896	msdcsc.exe
Token: SeRemoteShutdownPrivilege	1896	msdcsc.exe
Token: SeUndockPrivilege	1896	msdcsc.exe
Token: SeManageVolumePrivilege	1896	msdcsc.exe
Token: SeImpersonatePrivilege	1896	msdcsc.exe
Token: SeCreateGlobalPrivilege	1896	msdcsc.exe
Token: 33	1896	msdcsc.exe
Token: 34	1896	msdcsc.exe
Token: 35	1896	msdcsc.exe
Token: 36	1896	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

msdcsc.exe

pid process

1896 msdcsc.exe

pid	process
1896	msdcsc.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

72b401594c6d7674f905f8fcc187e2c8525f6b2c1c9682fafd5e1191d6a617cd.execmd.execmd.exe

description	pid	process	target process
PID 1692 wrote to memory of 4584	1692	72b401594c6d7674f905f8fcc187e2c8525f6b2c1c9682fafd5e1191d6a617cd.exe	cmd.exe
PID 1692 wrote to memory of 4584	1692	72b401594c6d7674f905f8fcc187e2c8525f6b2c1c9682fafd5e1191d6a617cd.exe	cmd.exe
PID 1692 wrote to memory of 4584	1692	72b401594c6d7674f905f8fcc187e2c8525f6b2c1c9682fafd5e1191d6a617cd.exe	cmd.exe
PID 1692 wrote to memory of 5112	1692	72b401594c6d7674f905f8fcc187e2c8525f6b2c1c9682fafd5e1191d6a617cd.exe	cmd.exe
PID 1692 wrote to memory of 5112	1692	72b401594c6d7674f905f8fcc187e2c8525f6b2c1c9682fafd5e1191d6a617cd.exe	cmd.exe
PID 1692 wrote to memory of 5112	1692	72b401594c6d7674f905f8fcc187e2c8525f6b2c1c9682fafd5e1191d6a617cd.exe	cmd.exe
PID 1692 wrote to memory of 1896	1692	72b401594c6d7674f905f8fcc187e2c8525f6b2c1c9682fafd5e1191d6a617cd.exe	msdcsc.exe
PID 1692 wrote to memory of 1896	1692	72b401594c6d7674f905f8fcc187e2c8525f6b2c1c9682fafd5e1191d6a617cd.exe	msdcsc.exe
PID 1692 wrote to memory of 1896	1692	72b401594c6d7674f905f8fcc187e2c8525f6b2c1c9682fafd5e1191d6a617cd.exe	msdcsc.exe
PID 5112 wrote to memory of 1700	5112	cmd.exe	attrib.exe
PID 5112 wrote to memory of 1700	5112	cmd.exe	attrib.exe
PID 5112 wrote to memory of 1700	5112	cmd.exe	attrib.exe
PID 4584 wrote to memory of 1928	4584	cmd.exe	attrib.exe
PID 4584 wrote to memory of 1928	4584	cmd.exe	attrib.exe
PID 4584 wrote to memory of 1928	4584	cmd.exe	attrib.exe

Views/modifies file attributes 1 TTPs 2 IoCs
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exeattrib.exe

pid process

1700 attrib.exe
1928 attrib.exe

pid	process
1700	attrib.exe
1928	attrib.exe

C:\Users\Admin\AppData\Local\Temp\72b401594c6d7674f905f8fcc187e2c8525f6b2c1c9682fafd5e1191d6a617cd.exe
"C:\Users\Admin\AppData\Local\Temp\72b401594c6d7674f905f8fcc187e2c8525f6b2c1c9682fafd5e1191d6a617cd.exe"
1⤵
- Modifies WinLogon for persistence
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1692

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\72b401594c6d7674f905f8fcc187e2c8525f6b2c1c9682fafd5e1191d6a617cd.exe" +s +h
2⤵
- Suspicious use of WriteProcessMemory
PID:4584

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp\72b401594c6d7674f905f8fcc187e2c8525f6b2c1c9682fafd5e1191d6a617cd.exe" +s +h
3⤵
- Sets file to hidden
- Views/modifies file attributes
PID:1928

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:5112

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
3⤵
- Sets file to hidden
- Views/modifies file attributes
PID:1700

C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
"C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
2⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:1896

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\Documents\MSDCSC\msdcsc.exe
Filesize
383KB

MD5
4ae30f28f1acb06cc303afb107fb5242

SHA1
017ed0e76ed7daee651f88c81df2f43c986a773c

SHA256
72b401594c6d7674f905f8fcc187e2c8525f6b2c1c9682fafd5e1191d6a617cd

SHA512
015292b13b5712357e9b7f33cb9097884b15578598c066a1fc5a272b8cddcfffe42bc6a9fa499ffae43ce245967ce005234ead3b50cf304f84f3666f06de8f16

Download Submit
C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
Filesize
383KB

MD5
4ae30f28f1acb06cc303afb107fb5242

SHA1
017ed0e76ed7daee651f88c81df2f43c986a773c

SHA256
72b401594c6d7674f905f8fcc187e2c8525f6b2c1c9682fafd5e1191d6a617cd

SHA512
015292b13b5712357e9b7f33cb9097884b15578598c066a1fc5a272b8cddcfffe42bc6a9fa499ffae43ce245967ce005234ead3b50cf304f84f3666f06de8f16

Download Submit
memory/1692-132-0x0000000000400000-0x00000000004FF000-memory.dmp

Filesize
1020KB

Download
memory/1692-141-0x0000000000400000-0x00000000004FF000-memory.dmp

Filesize
1020KB

Download
memory/1700-138-0x0000000000000000-mapping.dmp

Download
memory/1896-135-0x0000000000000000-mapping.dmp

Download
memory/1896-140-0x0000000000400000-0x00000000004FF000-memory.dmp

Filesize
1020KB

Download
memory/1896-142-0x0000000000400000-0x00000000004FF000-memory.dmp

Filesize
1020KB

Download
memory/1928-139-0x0000000000000000-mapping.dmp

Download
memory/4584-133-0x0000000000000000-mapping.dmp

Download
memory/5112-134-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads