darkcomet | 9153d1a2f2fe00b04462eb405d02754fecba082bcde45799dd1a53c994d75195

General

Target

9153d1a2f2fe00b04462eb405d02754fecba082bcde45799dd1a53c994d75195.exe
Size

350KB
MD5

7dee9ee8a1f01c84a03eec97edfefa90
SHA1

6ca55a33d811d84fedbff9278f2f8918284f5713
SHA256

9153d1a2f2fe00b04462eb405d02754fecba082bcde45799dd1a53c994d75195
SHA512

9efbf52874dcfc2a2c48dfb6894ffc3c4d9d02ca441260968886500cdfddc5e5bab51ff5b79117cb336aaa45f0206bfdfe60a7d8b04733192c9b732462920e22
SSDEEP

6144:WMI/jlS4kCwHL76nz9Q3uR5LTYYBIsHHN:WMQlS9Cwr79uLLTvBIY

Score

10^/10

darkcomet guest16 evasion persistence rat trojan upx

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

10.10.0.100:1604

Mutex

DC_MUTEX-30LAHYZ

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
al7BRWGr7y55
install
true
offline_keylogger
true
persistence
false
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

T1547.004

Modify Registry

T1112

Processes:

9153d1a2f2fe00b04462eb405d02754fecba082bcde45799dd1a53c994d75195.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"	9153d1a2f2fe00b04462eb405d02754fecba082bcde45799dd1a53c994d75195.exe

UPX dump on OEP (original entry point) 11 IoCs

Processes:

resource	yara_rule
behavioral2/memory/5028-0-0x0000000000400000-0x00000000004EA000-memory.dmp	UPX
C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe	UPX
behavioral2/memory/5028-14-0x0000000000400000-0x00000000004EA000-memory.dmp	UPX
behavioral2/memory/1396-16-0x0000000000400000-0x00000000004EA000-memory.dmp	UPX
behavioral2/memory/1396-19-0x0000000000400000-0x00000000004EA000-memory.dmp	UPX
behavioral2/memory/1396-21-0x0000000000400000-0x00000000004EA000-memory.dmp	UPX
behavioral2/memory/1396-23-0x0000000000400000-0x00000000004EA000-memory.dmp	UPX
behavioral2/memory/1396-25-0x0000000000400000-0x00000000004EA000-memory.dmp	UPX
behavioral2/memory/1396-27-0x0000000000400000-0x00000000004EA000-memory.dmp	UPX
behavioral2/memory/1396-29-0x0000000000400000-0x00000000004EA000-memory.dmp	UPX
behavioral2/memory/1396-31-0x0000000000400000-0x00000000004EA000-memory.dmp	UPX

Disables RegEdit via registry modification 1 IoCs

evasion

Processes:

msdcsc.exe

description	ioc	process
Set value (int)	\REGISTRY\USER\S-1-5-21-609813121-2907144057-1731107329-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1"	msdcsc.exe

Disables Task Manager via registry modification
evasion
Sets file to hidden 1 TTPs 2 IoCs
Modifies file attributes to stop it showing in Explorer etc.
evasion

Hidden Files and Directories
T1564.001

Processes:

attrib.exeattrib.exe

pid process

3056 attrib.exe
3128 attrib.exe

pid	process
3056	attrib.exe
3128	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:

9153d1a2f2fe00b04462eb405d02754fecba082bcde45799dd1a53c994d75195.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-609813121-2907144057-1731107329-1000\Control Panel\International\Geo\Nation	9153d1a2f2fe00b04462eb405d02754fecba082bcde45799dd1a53c994d75195.exe

Executes dropped EXE 1 IoCs

Processes:

msdcsc.exe

pid process

1396 msdcsc.exe

pid	process
1396	msdcsc.exe

UPX packed file 11 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/5028-0-0x0000000000400000-0x00000000004EA000-memory.dmp	upx
C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe	upx
behavioral2/memory/5028-14-0x0000000000400000-0x00000000004EA000-memory.dmp	upx
behavioral2/memory/1396-16-0x0000000000400000-0x00000000004EA000-memory.dmp	upx
behavioral2/memory/1396-19-0x0000000000400000-0x00000000004EA000-memory.dmp	upx
behavioral2/memory/1396-21-0x0000000000400000-0x00000000004EA000-memory.dmp	upx
behavioral2/memory/1396-23-0x0000000000400000-0x00000000004EA000-memory.dmp	upx
behavioral2/memory/1396-25-0x0000000000400000-0x00000000004EA000-memory.dmp	upx
behavioral2/memory/1396-27-0x0000000000400000-0x00000000004EA000-memory.dmp	upx
behavioral2/memory/1396-29-0x0000000000400000-0x00000000004EA000-memory.dmp	upx
behavioral2/memory/1396-31-0x0000000000400000-0x00000000004EA000-memory.dmp	upx

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

9153d1a2f2fe00b04462eb405d02754fecba082bcde45799dd1a53c994d75195.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-609813121-2907144057-1731107329-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\AppData\\Local\\Temp\\MSDCSC\\msdcsc.exe"	9153d1a2f2fe00b04462eb405d02754fecba082bcde45799dd1a53c994d75195.exe

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

System Information Discovery
T1082
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

msdcsc.exe

pid process

1396 msdcsc.exe

pid	process
1396	msdcsc.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

Processes:

9153d1a2f2fe00b04462eb405d02754fecba082bcde45799dd1a53c994d75195.exemsdcsc.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	5028	9153d1a2f2fe00b04462eb405d02754fecba082bcde45799dd1a53c994d75195.exe
Token: SeSecurityPrivilege	5028	9153d1a2f2fe00b04462eb405d02754fecba082bcde45799dd1a53c994d75195.exe
Token: SeTakeOwnershipPrivilege	5028	9153d1a2f2fe00b04462eb405d02754fecba082bcde45799dd1a53c994d75195.exe
Token: SeLoadDriverPrivilege	5028	9153d1a2f2fe00b04462eb405d02754fecba082bcde45799dd1a53c994d75195.exe
Token: SeSystemProfilePrivilege	5028	9153d1a2f2fe00b04462eb405d02754fecba082bcde45799dd1a53c994d75195.exe
Token: SeSystemtimePrivilege	5028	9153d1a2f2fe00b04462eb405d02754fecba082bcde45799dd1a53c994d75195.exe
Token: SeProfSingleProcessPrivilege	5028	9153d1a2f2fe00b04462eb405d02754fecba082bcde45799dd1a53c994d75195.exe
Token: SeIncBasePriorityPrivilege	5028	9153d1a2f2fe00b04462eb405d02754fecba082bcde45799dd1a53c994d75195.exe
Token: SeCreatePagefilePrivilege	5028	9153d1a2f2fe00b04462eb405d02754fecba082bcde45799dd1a53c994d75195.exe
Token: SeBackupPrivilege	5028	9153d1a2f2fe00b04462eb405d02754fecba082bcde45799dd1a53c994d75195.exe
Token: SeRestorePrivilege	5028	9153d1a2f2fe00b04462eb405d02754fecba082bcde45799dd1a53c994d75195.exe
Token: SeShutdownPrivilege	5028	9153d1a2f2fe00b04462eb405d02754fecba082bcde45799dd1a53c994d75195.exe
Token: SeDebugPrivilege	5028	9153d1a2f2fe00b04462eb405d02754fecba082bcde45799dd1a53c994d75195.exe
Token: SeSystemEnvironmentPrivilege	5028	9153d1a2f2fe00b04462eb405d02754fecba082bcde45799dd1a53c994d75195.exe
Token: SeChangeNotifyPrivilege	5028	9153d1a2f2fe00b04462eb405d02754fecba082bcde45799dd1a53c994d75195.exe
Token: SeRemoteShutdownPrivilege	5028	9153d1a2f2fe00b04462eb405d02754fecba082bcde45799dd1a53c994d75195.exe
Token: SeUndockPrivilege	5028	9153d1a2f2fe00b04462eb405d02754fecba082bcde45799dd1a53c994d75195.exe
Token: SeManageVolumePrivilege	5028	9153d1a2f2fe00b04462eb405d02754fecba082bcde45799dd1a53c994d75195.exe
Token: SeImpersonatePrivilege	5028	9153d1a2f2fe00b04462eb405d02754fecba082bcde45799dd1a53c994d75195.exe
Token: SeCreateGlobalPrivilege	5028	9153d1a2f2fe00b04462eb405d02754fecba082bcde45799dd1a53c994d75195.exe
Token: 33	5028	9153d1a2f2fe00b04462eb405d02754fecba082bcde45799dd1a53c994d75195.exe
Token: 34	5028	9153d1a2f2fe00b04462eb405d02754fecba082bcde45799dd1a53c994d75195.exe
Token: 35	5028	9153d1a2f2fe00b04462eb405d02754fecba082bcde45799dd1a53c994d75195.exe
Token: 36	5028	9153d1a2f2fe00b04462eb405d02754fecba082bcde45799dd1a53c994d75195.exe
Token: SeIncreaseQuotaPrivilege	1396	msdcsc.exe
Token: SeSecurityPrivilege	1396	msdcsc.exe
Token: SeTakeOwnershipPrivilege	1396	msdcsc.exe
Token: SeLoadDriverPrivilege	1396	msdcsc.exe
Token: SeSystemProfilePrivilege	1396	msdcsc.exe
Token: SeSystemtimePrivilege	1396	msdcsc.exe
Token: SeProfSingleProcessPrivilege	1396	msdcsc.exe
Token: SeIncBasePriorityPrivilege	1396	msdcsc.exe
Token: SeCreatePagefilePrivilege	1396	msdcsc.exe
Token: SeBackupPrivilege	1396	msdcsc.exe
Token: SeRestorePrivilege	1396	msdcsc.exe
Token: SeShutdownPrivilege	1396	msdcsc.exe
Token: SeDebugPrivilege	1396	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	1396	msdcsc.exe
Token: SeChangeNotifyPrivilege	1396	msdcsc.exe
Token: SeRemoteShutdownPrivilege	1396	msdcsc.exe
Token: SeUndockPrivilege	1396	msdcsc.exe
Token: SeManageVolumePrivilege	1396	msdcsc.exe
Token: SeImpersonatePrivilege	1396	msdcsc.exe
Token: SeCreateGlobalPrivilege	1396	msdcsc.exe
Token: 33	1396	msdcsc.exe
Token: 34	1396	msdcsc.exe
Token: 35	1396	msdcsc.exe
Token: 36	1396	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

msdcsc.exe

pid process

1396 msdcsc.exe

pid	process
1396	msdcsc.exe

Suspicious use of WriteProcessMemory 37 IoCs

Processes:

9153d1a2f2fe00b04462eb405d02754fecba082bcde45799dd1a53c994d75195.exemsdcsc.execmd.execmd.exe

description	pid	process	target process
PID 5028 wrote to memory of 4804	5028	9153d1a2f2fe00b04462eb405d02754fecba082bcde45799dd1a53c994d75195.exe	cmd.exe
PID 5028 wrote to memory of 4804	5028	9153d1a2f2fe00b04462eb405d02754fecba082bcde45799dd1a53c994d75195.exe	cmd.exe
PID 5028 wrote to memory of 4804	5028	9153d1a2f2fe00b04462eb405d02754fecba082bcde45799dd1a53c994d75195.exe	cmd.exe
PID 5028 wrote to memory of 2384	5028	9153d1a2f2fe00b04462eb405d02754fecba082bcde45799dd1a53c994d75195.exe	cmd.exe
PID 5028 wrote to memory of 2384	5028	9153d1a2f2fe00b04462eb405d02754fecba082bcde45799dd1a53c994d75195.exe	cmd.exe
PID 5028 wrote to memory of 2384	5028	9153d1a2f2fe00b04462eb405d02754fecba082bcde45799dd1a53c994d75195.exe	cmd.exe
PID 5028 wrote to memory of 1396	5028	9153d1a2f2fe00b04462eb405d02754fecba082bcde45799dd1a53c994d75195.exe	msdcsc.exe
PID 5028 wrote to memory of 1396	5028	9153d1a2f2fe00b04462eb405d02754fecba082bcde45799dd1a53c994d75195.exe	msdcsc.exe
PID 5028 wrote to memory of 1396	5028	9153d1a2f2fe00b04462eb405d02754fecba082bcde45799dd1a53c994d75195.exe	msdcsc.exe
PID 1396 wrote to memory of 4336	1396	msdcsc.exe	notepad.exe
PID 1396 wrote to memory of 4336	1396	msdcsc.exe	notepad.exe
PID 1396 wrote to memory of 4336	1396	msdcsc.exe	notepad.exe
PID 1396 wrote to memory of 4336	1396	msdcsc.exe	notepad.exe
PID 1396 wrote to memory of 4336	1396	msdcsc.exe	notepad.exe
PID 1396 wrote to memory of 4336	1396	msdcsc.exe	notepad.exe
PID 1396 wrote to memory of 4336	1396	msdcsc.exe	notepad.exe
PID 1396 wrote to memory of 4336	1396	msdcsc.exe	notepad.exe
PID 1396 wrote to memory of 4336	1396	msdcsc.exe	notepad.exe
PID 1396 wrote to memory of 4336	1396	msdcsc.exe	notepad.exe
PID 1396 wrote to memory of 4336	1396	msdcsc.exe	notepad.exe
PID 1396 wrote to memory of 4336	1396	msdcsc.exe	notepad.exe
PID 1396 wrote to memory of 4336	1396	msdcsc.exe	notepad.exe
PID 1396 wrote to memory of 4336	1396	msdcsc.exe	notepad.exe
PID 1396 wrote to memory of 4336	1396	msdcsc.exe	notepad.exe
PID 1396 wrote to memory of 4336	1396	msdcsc.exe	notepad.exe
PID 1396 wrote to memory of 4336	1396	msdcsc.exe	notepad.exe
PID 1396 wrote to memory of 4336	1396	msdcsc.exe	notepad.exe
PID 1396 wrote to memory of 4336	1396	msdcsc.exe	notepad.exe
PID 1396 wrote to memory of 4336	1396	msdcsc.exe	notepad.exe
PID 1396 wrote to memory of 4336	1396	msdcsc.exe	notepad.exe
PID 1396 wrote to memory of 4336	1396	msdcsc.exe	notepad.exe
PID 4804 wrote to memory of 3056	4804	cmd.exe	attrib.exe
PID 4804 wrote to memory of 3056	4804	cmd.exe	attrib.exe
PID 4804 wrote to memory of 3056	4804	cmd.exe	attrib.exe
PID 2384 wrote to memory of 3128	2384	cmd.exe	attrib.exe
PID 2384 wrote to memory of 3128	2384	cmd.exe	attrib.exe
PID 2384 wrote to memory of 3128	2384	cmd.exe	attrib.exe

Views/modifies file attributes 1 TTPs 2 IoCs
evasion

Hidden Files and Directories
T1564.001

Processes:

attrib.exeattrib.exe

pid process

3056 attrib.exe
3128 attrib.exe

pid	process
3056	attrib.exe
3128	attrib.exe

C:\Users\Admin\AppData\Local\Temp\9153d1a2f2fe00b04462eb405d02754fecba082bcde45799dd1a53c994d75195.exe
"C:\Users\Admin\AppData\Local\Temp\9153d1a2f2fe00b04462eb405d02754fecba082bcde45799dd1a53c994d75195.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:5028

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\9153d1a2f2fe00b04462eb405d02754fecba082bcde45799dd1a53c994d75195.exe" +s +h
2⤵
- Suspicious use of WriteProcessMemory
PID:4804

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp\9153d1a2f2fe00b04462eb405d02754fecba082bcde45799dd1a53c994d75195.exe" +s +h
3⤵
- Sets file to hidden
- Views/modifies file attributes
PID:3056

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:2384

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
3⤵
- Sets file to hidden
- Views/modifies file attributes
PID:3128

C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
"C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe"
2⤵
- Disables RegEdit via registry modification
- Executes dropped EXE
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1396

C:\Windows\SysWOW64\notepad.exe
notepad
3⤵
PID:4336

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

2

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Winlogon Helper DLL

1

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

2

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Winlogon Helper DLL

1

T1547.004

Defense Evasion

Modify Registry

2

T1112

Hide Artifacts

2

T1564

Hidden Files and Directories

2

T1564.001

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
Filesize
350KB

MD5
7dee9ee8a1f01c84a03eec97edfefa90

SHA1
6ca55a33d811d84fedbff9278f2f8918284f5713

SHA256
9153d1a2f2fe00b04462eb405d02754fecba082bcde45799dd1a53c994d75195

SHA512
9efbf52874dcfc2a2c48dfb6894ffc3c4d9d02ca441260968886500cdfddc5e5bab51ff5b79117cb336aaa45f0206bfdfe60a7d8b04733192c9b732462920e22

Download Submit
memory/1396-25-0x0000000000400000-0x00000000004EA000-memory.dmp

Filesize
936KB

Download
memory/1396-31-0x0000000000400000-0x00000000004EA000-memory.dmp

Filesize
936KB

Download
memory/1396-29-0x0000000000400000-0x00000000004EA000-memory.dmp

Filesize
936KB

Download
memory/1396-16-0x0000000000400000-0x00000000004EA000-memory.dmp

Filesize
936KB

Download
memory/1396-17-0x00000000007B0000-0x00000000007B1000-memory.dmp

Filesize
4KB

Download
memory/1396-27-0x0000000000400000-0x00000000004EA000-memory.dmp

Filesize
936KB

Download
memory/1396-19-0x0000000000400000-0x00000000004EA000-memory.dmp

Filesize
936KB

Download
memory/1396-21-0x0000000000400000-0x00000000004EA000-memory.dmp

Filesize
936KB

Download
memory/1396-23-0x0000000000400000-0x00000000004EA000-memory.dmp

Filesize
936KB

Download
memory/4336-18-0x0000000000970000-0x0000000000971000-memory.dmp

Filesize
4KB

Download
memory/5028-0-0x0000000000400000-0x00000000004EA000-memory.dmp

Filesize
936KB

Download
memory/5028-14-0x0000000000400000-0x00000000004EA000-memory.dmp

Filesize
936KB

Download
memory/5028-1-0x0000000000C20000-0x0000000000C21000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads