darkcomet | c97cf0d0a0a498ecfd3474d97cf5314f399dacea63701df422f1b0199ad28608

General

Target

c97cf0d0a0a498ecfd3474d97cf5314f399dacea63701df422f1b0199ad28608.exe
Size

252KB
MD5

9d1f92ac5af5eff6e517e587e1e8278b
SHA1

732ca21d250323be7b2ef24c3c335005e839b196
SHA256

c97cf0d0a0a498ecfd3474d97cf5314f399dacea63701df422f1b0199ad28608
SHA512

715a7cdb9f2270c447aae9df60be3a2ace48fa276da2ef09161b558b255434e74f5fb3c423b82813c1574bd37e2645ea1cea3375bb613c2b6c7064ed95478063

Score

10^/10

darkcomet guest16 persistence rat trojan upx

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

ximer2020.ddns.net:1604

Mutex

DC_MUTEX-4U0HFC0

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
aDFqoxfKfrcR
install
true
offline_keylogger
true
password
82121020202222
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:

c97cf0d0a0a498ecfd3474d97cf5314f399dacea63701df422f1b0199ad28608.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"	c97cf0d0a0a498ecfd3474d97cf5314f399dacea63701df422f1b0199ad28608.exe

Executes dropped EXE 1 IoCs

Processes:

msdcsc.exe

pid process

3948 msdcsc.exe

pid	process
3948	msdcsc.exe

UPX packed file 5 IoCs

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

upx

Processes:

resource	yara_rule
C:\Users\Admin\Documents\MSDCSC\msdcsc.exe	upx
C:\Users\Admin\Documents\MSDCSC\msdcsc.exe	upx
behavioral2/memory/3028-6-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/3028-8-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/3028-9-0x0000000000400000-0x00000000004B7000-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

Processes:

c97cf0d0a0a498ecfd3474d97cf5314f399dacea63701df422f1b0199ad28608.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Control Panel\International\Geo\Nation	c97cf0d0a0a498ecfd3474d97cf5314f399dacea63701df422f1b0199ad28608.exe

Deletes itself 1 IoCs

Processes:

notepad.exe

pid process

3116 notepad.exe

pid	process
3116	notepad.exe

Adds Run key to start application 2 TTPs 3 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

c97cf0d0a0a498ecfd3474d97cf5314f399dacea63701df422f1b0199ad28608.exemsdcsc.exeiexplore.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	c97cf0d0a0a498ecfd3474d97cf5314f399dacea63701df422f1b0199ad28608.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	msdcsc.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	iexplore.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

msdcsc.exe

description pid process target process

PID 3948 set thread context of 3028 3948 msdcsc.exe iexplore.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

description	pid	process	target process
PID 3948 set thread context of 3028	3948	msdcsc.exe	iexplore.exe

Modifies registry class 1 IoCs

Processes:

c97cf0d0a0a498ecfd3474d97cf5314f399dacea63701df422f1b0199ad28608.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance	c97cf0d0a0a498ecfd3474d97cf5314f399dacea63701df422f1b0199ad28608.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

iexplore.exe

pid process

3028 iexplore.exe

pid	process
3028	iexplore.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

Processes:

c97cf0d0a0a498ecfd3474d97cf5314f399dacea63701df422f1b0199ad28608.exemsdcsc.exeiexplore.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	732	c97cf0d0a0a498ecfd3474d97cf5314f399dacea63701df422f1b0199ad28608.exe
Token: SeSecurityPrivilege	732	c97cf0d0a0a498ecfd3474d97cf5314f399dacea63701df422f1b0199ad28608.exe
Token: SeTakeOwnershipPrivilege	732	c97cf0d0a0a498ecfd3474d97cf5314f399dacea63701df422f1b0199ad28608.exe
Token: SeLoadDriverPrivilege	732	c97cf0d0a0a498ecfd3474d97cf5314f399dacea63701df422f1b0199ad28608.exe
Token: SeSystemProfilePrivilege	732	c97cf0d0a0a498ecfd3474d97cf5314f399dacea63701df422f1b0199ad28608.exe
Token: SeSystemtimePrivilege	732	c97cf0d0a0a498ecfd3474d97cf5314f399dacea63701df422f1b0199ad28608.exe
Token: SeProfSingleProcessPrivilege	732	c97cf0d0a0a498ecfd3474d97cf5314f399dacea63701df422f1b0199ad28608.exe
Token: SeIncBasePriorityPrivilege	732	c97cf0d0a0a498ecfd3474d97cf5314f399dacea63701df422f1b0199ad28608.exe
Token: SeCreatePagefilePrivilege	732	c97cf0d0a0a498ecfd3474d97cf5314f399dacea63701df422f1b0199ad28608.exe
Token: SeBackupPrivilege	732	c97cf0d0a0a498ecfd3474d97cf5314f399dacea63701df422f1b0199ad28608.exe
Token: SeRestorePrivilege	732	c97cf0d0a0a498ecfd3474d97cf5314f399dacea63701df422f1b0199ad28608.exe
Token: SeShutdownPrivilege	732	c97cf0d0a0a498ecfd3474d97cf5314f399dacea63701df422f1b0199ad28608.exe
Token: SeDebugPrivilege	732	c97cf0d0a0a498ecfd3474d97cf5314f399dacea63701df422f1b0199ad28608.exe
Token: SeSystemEnvironmentPrivilege	732	c97cf0d0a0a498ecfd3474d97cf5314f399dacea63701df422f1b0199ad28608.exe
Token: SeChangeNotifyPrivilege	732	c97cf0d0a0a498ecfd3474d97cf5314f399dacea63701df422f1b0199ad28608.exe
Token: SeRemoteShutdownPrivilege	732	c97cf0d0a0a498ecfd3474d97cf5314f399dacea63701df422f1b0199ad28608.exe
Token: SeUndockPrivilege	732	c97cf0d0a0a498ecfd3474d97cf5314f399dacea63701df422f1b0199ad28608.exe
Token: SeManageVolumePrivilege	732	c97cf0d0a0a498ecfd3474d97cf5314f399dacea63701df422f1b0199ad28608.exe
Token: SeImpersonatePrivilege	732	c97cf0d0a0a498ecfd3474d97cf5314f399dacea63701df422f1b0199ad28608.exe
Token: SeCreateGlobalPrivilege	732	c97cf0d0a0a498ecfd3474d97cf5314f399dacea63701df422f1b0199ad28608.exe
Token: 33	732	c97cf0d0a0a498ecfd3474d97cf5314f399dacea63701df422f1b0199ad28608.exe
Token: 34	732	c97cf0d0a0a498ecfd3474d97cf5314f399dacea63701df422f1b0199ad28608.exe
Token: 35	732	c97cf0d0a0a498ecfd3474d97cf5314f399dacea63701df422f1b0199ad28608.exe
Token: 36	732	c97cf0d0a0a498ecfd3474d97cf5314f399dacea63701df422f1b0199ad28608.exe
Token: SeIncreaseQuotaPrivilege	3948	msdcsc.exe
Token: SeSecurityPrivilege	3948	msdcsc.exe
Token: SeTakeOwnershipPrivilege	3948	msdcsc.exe
Token: SeLoadDriverPrivilege	3948	msdcsc.exe
Token: SeSystemProfilePrivilege	3948	msdcsc.exe
Token: SeSystemtimePrivilege	3948	msdcsc.exe
Token: SeProfSingleProcessPrivilege	3948	msdcsc.exe
Token: SeIncBasePriorityPrivilege	3948	msdcsc.exe
Token: SeCreatePagefilePrivilege	3948	msdcsc.exe
Token: SeBackupPrivilege	3948	msdcsc.exe
Token: SeRestorePrivilege	3948	msdcsc.exe
Token: SeShutdownPrivilege	3948	msdcsc.exe
Token: SeDebugPrivilege	3948	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	3948	msdcsc.exe
Token: SeChangeNotifyPrivilege	3948	msdcsc.exe
Token: SeRemoteShutdownPrivilege	3948	msdcsc.exe
Token: SeUndockPrivilege	3948	msdcsc.exe
Token: SeManageVolumePrivilege	3948	msdcsc.exe
Token: SeImpersonatePrivilege	3948	msdcsc.exe
Token: SeCreateGlobalPrivilege	3948	msdcsc.exe
Token: 33	3948	msdcsc.exe
Token: 34	3948	msdcsc.exe
Token: 35	3948	msdcsc.exe
Token: 36	3948	msdcsc.exe
Token: SeIncreaseQuotaPrivilege	3028	iexplore.exe
Token: SeSecurityPrivilege	3028	iexplore.exe
Token: SeTakeOwnershipPrivilege	3028	iexplore.exe
Token: SeLoadDriverPrivilege	3028	iexplore.exe
Token: SeSystemProfilePrivilege	3028	iexplore.exe
Token: SeSystemtimePrivilege	3028	iexplore.exe
Token: SeProfSingleProcessPrivilege	3028	iexplore.exe
Token: SeIncBasePriorityPrivilege	3028	iexplore.exe
Token: SeCreatePagefilePrivilege	3028	iexplore.exe
Token: SeBackupPrivilege	3028	iexplore.exe
Token: SeRestorePrivilege	3028	iexplore.exe
Token: SeShutdownPrivilege	3028	iexplore.exe
Token: SeDebugPrivilege	3028	iexplore.exe
Token: SeSystemEnvironmentPrivilege	3028	iexplore.exe
Token: SeChangeNotifyPrivilege	3028	iexplore.exe
Token: SeRemoteShutdownPrivilege	3028	iexplore.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

iexplore.exe

pid process

3028 iexplore.exe

pid	process
3028	iexplore.exe

Suspicious use of WriteProcessMemory 47 IoCs

Processes:

c97cf0d0a0a498ecfd3474d97cf5314f399dacea63701df422f1b0199ad28608.exemsdcsc.exeiexplore.exe

description	pid	process	target process
PID 732 wrote to memory of 3116	732	c97cf0d0a0a498ecfd3474d97cf5314f399dacea63701df422f1b0199ad28608.exe	notepad.exe
PID 732 wrote to memory of 3116	732	c97cf0d0a0a498ecfd3474d97cf5314f399dacea63701df422f1b0199ad28608.exe	notepad.exe
PID 732 wrote to memory of 3116	732	c97cf0d0a0a498ecfd3474d97cf5314f399dacea63701df422f1b0199ad28608.exe	notepad.exe
PID 732 wrote to memory of 3116	732	c97cf0d0a0a498ecfd3474d97cf5314f399dacea63701df422f1b0199ad28608.exe	notepad.exe
PID 732 wrote to memory of 3116	732	c97cf0d0a0a498ecfd3474d97cf5314f399dacea63701df422f1b0199ad28608.exe	notepad.exe
PID 732 wrote to memory of 3116	732	c97cf0d0a0a498ecfd3474d97cf5314f399dacea63701df422f1b0199ad28608.exe	notepad.exe
PID 732 wrote to memory of 3116	732	c97cf0d0a0a498ecfd3474d97cf5314f399dacea63701df422f1b0199ad28608.exe	notepad.exe
PID 732 wrote to memory of 3116	732	c97cf0d0a0a498ecfd3474d97cf5314f399dacea63701df422f1b0199ad28608.exe	notepad.exe
PID 732 wrote to memory of 3116	732	c97cf0d0a0a498ecfd3474d97cf5314f399dacea63701df422f1b0199ad28608.exe	notepad.exe
PID 732 wrote to memory of 3116	732	c97cf0d0a0a498ecfd3474d97cf5314f399dacea63701df422f1b0199ad28608.exe	notepad.exe
PID 732 wrote to memory of 3116	732	c97cf0d0a0a498ecfd3474d97cf5314f399dacea63701df422f1b0199ad28608.exe	notepad.exe
PID 732 wrote to memory of 3116	732	c97cf0d0a0a498ecfd3474d97cf5314f399dacea63701df422f1b0199ad28608.exe	notepad.exe
PID 732 wrote to memory of 3116	732	c97cf0d0a0a498ecfd3474d97cf5314f399dacea63701df422f1b0199ad28608.exe	notepad.exe
PID 732 wrote to memory of 3116	732	c97cf0d0a0a498ecfd3474d97cf5314f399dacea63701df422f1b0199ad28608.exe	notepad.exe
PID 732 wrote to memory of 3116	732	c97cf0d0a0a498ecfd3474d97cf5314f399dacea63701df422f1b0199ad28608.exe	notepad.exe
PID 732 wrote to memory of 3116	732	c97cf0d0a0a498ecfd3474d97cf5314f399dacea63701df422f1b0199ad28608.exe	notepad.exe
PID 732 wrote to memory of 3116	732	c97cf0d0a0a498ecfd3474d97cf5314f399dacea63701df422f1b0199ad28608.exe	notepad.exe
PID 732 wrote to memory of 3948	732	c97cf0d0a0a498ecfd3474d97cf5314f399dacea63701df422f1b0199ad28608.exe	msdcsc.exe
PID 732 wrote to memory of 3948	732	c97cf0d0a0a498ecfd3474d97cf5314f399dacea63701df422f1b0199ad28608.exe	msdcsc.exe
PID 732 wrote to memory of 3948	732	c97cf0d0a0a498ecfd3474d97cf5314f399dacea63701df422f1b0199ad28608.exe	msdcsc.exe
PID 3948 wrote to memory of 3028	3948	msdcsc.exe	iexplore.exe
PID 3948 wrote to memory of 3028	3948	msdcsc.exe	iexplore.exe
PID 3948 wrote to memory of 3028	3948	msdcsc.exe	iexplore.exe
PID 3948 wrote to memory of 3028	3948	msdcsc.exe	iexplore.exe
PID 3948 wrote to memory of 3028	3948	msdcsc.exe	iexplore.exe
PID 3028 wrote to memory of 1612	3028	iexplore.exe	notepad.exe
PID 3028 wrote to memory of 1612	3028	iexplore.exe	notepad.exe
PID 3028 wrote to memory of 1612	3028	iexplore.exe	notepad.exe
PID 3028 wrote to memory of 1612	3028	iexplore.exe	notepad.exe
PID 3028 wrote to memory of 1612	3028	iexplore.exe	notepad.exe
PID 3028 wrote to memory of 1612	3028	iexplore.exe	notepad.exe
PID 3028 wrote to memory of 1612	3028	iexplore.exe	notepad.exe
PID 3028 wrote to memory of 1612	3028	iexplore.exe	notepad.exe
PID 3028 wrote to memory of 1612	3028	iexplore.exe	notepad.exe
PID 3028 wrote to memory of 1612	3028	iexplore.exe	notepad.exe
PID 3028 wrote to memory of 1612	3028	iexplore.exe	notepad.exe
PID 3028 wrote to memory of 1612	3028	iexplore.exe	notepad.exe
PID 3028 wrote to memory of 1612	3028	iexplore.exe	notepad.exe
PID 3028 wrote to memory of 1612	3028	iexplore.exe	notepad.exe
PID 3028 wrote to memory of 1612	3028	iexplore.exe	notepad.exe
PID 3028 wrote to memory of 1612	3028	iexplore.exe	notepad.exe
PID 3028 wrote to memory of 1612	3028	iexplore.exe	notepad.exe
PID 3028 wrote to memory of 1612	3028	iexplore.exe	notepad.exe
PID 3028 wrote to memory of 1612	3028	iexplore.exe	notepad.exe
PID 3028 wrote to memory of 1612	3028	iexplore.exe	notepad.exe
PID 3028 wrote to memory of 1612	3028	iexplore.exe	notepad.exe
PID 3028 wrote to memory of 1612	3028	iexplore.exe	notepad.exe

C:\Users\Admin\AppData\Local\Temp\c97cf0d0a0a498ecfd3474d97cf5314f399dacea63701df422f1b0199ad28608.exe
"C:\Users\Admin\AppData\Local\Temp\c97cf0d0a0a498ecfd3474d97cf5314f399dacea63701df422f1b0199ad28608.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:732

C:\Windows\SysWOW64\notepad.exe
notepad
2⤵
- Deletes itself
PID:3116

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 SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3948

C:\Program Files (x86)\Internet Explorer\iexplore.exe
"C:\Program Files (x86)\Internet Explorer\iexplore.exe"
3⤵
- Adds Run key to start application
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3028

C:\Windows\SysWOW64\notepad.exe
notepad
4⤵
PID:1612

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Winlogon Helper DLL

1

T1004

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

2

T1112

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
MD5
9d1f92ac5af5eff6e517e587e1e8278b

SHA1
732ca21d250323be7b2ef24c3c335005e839b196

SHA256
c97cf0d0a0a498ecfd3474d97cf5314f399dacea63701df422f1b0199ad28608

SHA512
715a7cdb9f2270c447aae9df60be3a2ace48fa276da2ef09161b558b255434e74f5fb3c423b82813c1574bd37e2645ea1cea3375bb613c2b6c7064ed95478063

Download Submit
C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
MD5
9d1f92ac5af5eff6e517e587e1e8278b

SHA1
732ca21d250323be7b2ef24c3c335005e839b196

SHA256
c97cf0d0a0a498ecfd3474d97cf5314f399dacea63701df422f1b0199ad28608

SHA512
715a7cdb9f2270c447aae9df60be3a2ace48fa276da2ef09161b558b255434e74f5fb3c423b82813c1574bd37e2645ea1cea3375bb613c2b6c7064ed95478063

Download Submit
memory/1612-12-0x0000000000000000-mapping.dmp

Download
memory/1612-11-0x0000000002C40000-0x0000000002C41000-memory.dmp

Filesize
4KB

Download
memory/1612-10-0x0000000000000000-mapping.dmp

Download
memory/3028-9-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/3028-6-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/3028-7-0x00000000004B5820-mapping.dmp

Download
memory/3028-8-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/3116-0-0x0000000000000000-mapping.dmp

Download
memory/3116-2-0x0000000000000000-mapping.dmp

Download
memory/3116-1-0x0000000002E80000-0x0000000002E81000-memory.dmp

Filesize
4KB

Download
memory/3948-3-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads