darkcomet | 00f75c9a655082b09bb74fba7c2df1e8f399ec3dd3a1d077090ee0c38d2c1554

General

Target

00f75c9a655082b09bb74fba7c2df1e8f399ec3dd3a1d077090ee0c38d2c1554N.exe
Size

527KB
MD5

c88959978013b577c7ad729571465050
SHA1

d2f90686d9044e57e0294608289ec63a02a132a5
SHA256

00f75c9a655082b09bb74fba7c2df1e8f399ec3dd3a1d077090ee0c38d2c1554
SHA512

eff7b78e5a326ae7d46177c2f7c8bbd85c5be700c5adac80eaea25b5d0cb59af081f0cf31dcb421cdac76cff9a7718bccb13d90d5d420e8618d8a96cae8befa5
SSDEEP

12288:UXqKvamE4Yy2/Mv6m216SEXWTSPJOhKz0rvcKAqYlr:UaAI3onm2JKULYYB

Score

10^/10

darkcomet winuc discovery persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

WinUC

C2

karinwebcam.no-ip.biz:1004

Mutex

DC_MUTEX-7TG741T

Attributes

InstallPath
explorer\explorer.exe
gencode
ppWkXTKeUVQg
install
true
offline_keylogger
true
persistence
false
reg_key
Explorer

Signatures

Darkcomet
DarkComet is a remote access trojan (RAT) developed by Jean-Pierre Lesueur.
trojan rat darkcomet
Darkcomet family
darkcomet

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Windows\\system32\\explorer\\explorer.exe"	vbc.exe

Executes dropped EXE 4 IoCs

pid	Process
1224	tmpDF86.tmp.exe
3048	tmpDF86.tmp.exe
2132	vbc.exe
2900	explorer.exe

Loads dropped DLL 4 IoCs

pid	Process
2084	00f75c9a655082b09bb74fba7c2df1e8f399ec3dd3a1d077090ee0c38d2c1554N.exe
1224	tmpDF86.tmp.exe
2084	00f75c9a655082b09bb74fba7c2df1e8f399ec3dd3a1d077090ee0c38d2c1554N.exe
2132	vbc.exe

Uses the VBS compiler for execution 1 TTPs

Command and Scripting Interpreter
T1059

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1846800975-3917212583-2893086201-1000\Software\Microsoft\Windows\CurrentVersion\Run\javaw.exe = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\tmpDF86.tmp.exe\""	tmpDF86.tmp.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1846800975-3917212583-2893086201-1000\Software\Microsoft\Windows\CurrentVersion\Run\Explorer = "C:\\Windows\\system32\\explorer\\explorer.exe"	vbc.exe

Drops file in System32 directory 3 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\explorer\explorer.exe	vbc.exe
File opened for modification	C:\Windows\SysWOW64\explorer\explorer.exe	vbc.exe
File opened for modification	C:\Windows\SysWOW64\explorer\	vbc.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2084 set thread context of 2132	2084	00f75c9a655082b09bb74fba7c2df1e8f399ec3dd3a1d077090ee0c38d2c1554N.exe	33

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vbc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	explorer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	00f75c9a655082b09bb74fba7c2df1e8f399ec3dd3a1d077090ee0c38d2c1554N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	tmpDF86.tmp.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	tmpDF86.tmp.exe

Suspicious use of AdjustPrivilegeToken 26 IoCs

description	pid	Process
Token: SeDebugPrivilege	2084	00f75c9a655082b09bb74fba7c2df1e8f399ec3dd3a1d077090ee0c38d2c1554N.exe
Token: SeDebugPrivilege	1224	tmpDF86.tmp.exe
Token: SeDebugPrivilege	3048	tmpDF86.tmp.exe
Token: SeIncreaseQuotaPrivilege	2132	vbc.exe
Token: SeSecurityPrivilege	2132	vbc.exe
Token: SeTakeOwnershipPrivilege	2132	vbc.exe
Token: SeLoadDriverPrivilege	2132	vbc.exe
Token: SeSystemProfilePrivilege	2132	vbc.exe
Token: SeSystemtimePrivilege	2132	vbc.exe
Token: SeProfSingleProcessPrivilege	2132	vbc.exe
Token: SeIncBasePriorityPrivilege	2132	vbc.exe
Token: SeCreatePagefilePrivilege	2132	vbc.exe
Token: SeBackupPrivilege	2132	vbc.exe
Token: SeRestorePrivilege	2132	vbc.exe
Token: SeShutdownPrivilege	2132	vbc.exe
Token: SeDebugPrivilege	2132	vbc.exe
Token: SeSystemEnvironmentPrivilege	2132	vbc.exe
Token: SeChangeNotifyPrivilege	2132	vbc.exe
Token: SeRemoteShutdownPrivilege	2132	vbc.exe
Token: SeUndockPrivilege	2132	vbc.exe
Token: SeManageVolumePrivilege	2132	vbc.exe
Token: SeImpersonatePrivilege	2132	vbc.exe
Token: SeCreateGlobalPrivilege	2132	vbc.exe
Token: 33	2132	vbc.exe
Token: 34	2132	vbc.exe
Token: 35	2132	vbc.exe

Suspicious use of WriteProcessMemory 25 IoCs

description	pid	Process	procid_target
PID 2084 wrote to memory of 1224	2084	00f75c9a655082b09bb74fba7c2df1e8f399ec3dd3a1d077090ee0c38d2c1554N.exe	31
PID 2084 wrote to memory of 1224	2084	00f75c9a655082b09bb74fba7c2df1e8f399ec3dd3a1d077090ee0c38d2c1554N.exe	31
PID 2084 wrote to memory of 1224	2084	00f75c9a655082b09bb74fba7c2df1e8f399ec3dd3a1d077090ee0c38d2c1554N.exe	31
PID 2084 wrote to memory of 1224	2084	00f75c9a655082b09bb74fba7c2df1e8f399ec3dd3a1d077090ee0c38d2c1554N.exe	31
PID 1224 wrote to memory of 3048	1224	tmpDF86.tmp.exe	32
PID 1224 wrote to memory of 3048	1224	tmpDF86.tmp.exe	32
PID 1224 wrote to memory of 3048	1224	tmpDF86.tmp.exe	32
PID 1224 wrote to memory of 3048	1224	tmpDF86.tmp.exe	32
PID 2084 wrote to memory of 2132	2084	00f75c9a655082b09bb74fba7c2df1e8f399ec3dd3a1d077090ee0c38d2c1554N.exe	33
PID 2084 wrote to memory of 2132	2084	00f75c9a655082b09bb74fba7c2df1e8f399ec3dd3a1d077090ee0c38d2c1554N.exe	33
PID 2084 wrote to memory of 2132	2084	00f75c9a655082b09bb74fba7c2df1e8f399ec3dd3a1d077090ee0c38d2c1554N.exe	33
PID 2084 wrote to memory of 2132	2084	00f75c9a655082b09bb74fba7c2df1e8f399ec3dd3a1d077090ee0c38d2c1554N.exe	33
PID 2084 wrote to memory of 2132	2084	00f75c9a655082b09bb74fba7c2df1e8f399ec3dd3a1d077090ee0c38d2c1554N.exe	33
PID 2084 wrote to memory of 2132	2084	00f75c9a655082b09bb74fba7c2df1e8f399ec3dd3a1d077090ee0c38d2c1554N.exe	33
PID 2084 wrote to memory of 2132	2084	00f75c9a655082b09bb74fba7c2df1e8f399ec3dd3a1d077090ee0c38d2c1554N.exe	33
PID 2084 wrote to memory of 2132	2084	00f75c9a655082b09bb74fba7c2df1e8f399ec3dd3a1d077090ee0c38d2c1554N.exe	33
PID 2084 wrote to memory of 2132	2084	00f75c9a655082b09bb74fba7c2df1e8f399ec3dd3a1d077090ee0c38d2c1554N.exe	33
PID 2084 wrote to memory of 2132	2084	00f75c9a655082b09bb74fba7c2df1e8f399ec3dd3a1d077090ee0c38d2c1554N.exe	33
PID 2084 wrote to memory of 2132	2084	00f75c9a655082b09bb74fba7c2df1e8f399ec3dd3a1d077090ee0c38d2c1554N.exe	33
PID 2084 wrote to memory of 2132	2084	00f75c9a655082b09bb74fba7c2df1e8f399ec3dd3a1d077090ee0c38d2c1554N.exe	33
PID 2084 wrote to memory of 2132	2084	00f75c9a655082b09bb74fba7c2df1e8f399ec3dd3a1d077090ee0c38d2c1554N.exe	33
PID 2132 wrote to memory of 2900	2132	vbc.exe	34
PID 2132 wrote to memory of 2900	2132	vbc.exe	34
PID 2132 wrote to memory of 2900	2132	vbc.exe	34
PID 2132 wrote to memory of 2900	2132	vbc.exe	34

C:\Users\Admin\AppData\Local\Temp\00f75c9a655082b09bb74fba7c2df1e8f399ec3dd3a1d077090ee0c38d2c1554N.exe
"C:\Users\Admin\AppData\Local\Temp\00f75c9a655082b09bb74fba7c2df1e8f399ec3dd3a1d077090ee0c38d2c1554N.exe"
1⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2084
- C:\Users\Admin\AppData\Local\Temp\tmpDF86.tmp.exe
  "C:\Users\Admin\AppData\Local\Temp\tmpDF86.tmp.exe" /pq
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1224
- - C:\Users\Admin\AppData\Local\Temp\tmpDF86.tmp.exe
    "C:\Users\Admin\AppData\Local\Temp\tmpDF86.tmp.exe" /px
    3⤵
    - Executes dropped EXE
    - Adds Run key to start application
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    PID:3048
- C:\Users\Admin\AppData\Local\Temp\temp_cyZGVEsGhD\vbc.exe
  "C:\Users\Admin\AppData\Local\Temp\temp_cyZGVEsGhD\vbc.exe"
  2⤵
  - Modifies WinLogon for persistence
  - Executes dropped EXE
  - Loads dropped DLL
  - Adds Run key to start application
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2132
- - C:\Windows\SysWOW64\explorer\explorer.exe
    "C:\Windows\system32\explorer\explorer.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:2900

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

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

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

\Users\Admin\AppData\Local\Temp\temp_cyZGVEsGhD\vbc.exe

Filesize
1.1MB

MD5
34aa912defa18c2c129f1e09d75c1d7e

SHA1
9c3046324657505a30ecd9b1fdb46c05bde7d470

SHA256
6df94b7fa33f1b87142adc39b3db0613fc520d9e7a5fd6a5301dd7f51f8d0386

SHA512
d1ea9368f5d7166180612fd763c87afb647d088498887961f5e7fb0a10f4a808bd5928e8a3666d70ff794093c51ecca8816f75dd47652fd4eb23dce7f9aa1f98

Download Submit
\Users\Admin\AppData\Local\Temp\tmpDF86.tmp.exe

Filesize
527KB

MD5
c88959978013b577c7ad729571465050

SHA1
d2f90686d9044e57e0294608289ec63a02a132a5

SHA256
00f75c9a655082b09bb74fba7c2df1e8f399ec3dd3a1d077090ee0c38d2c1554

SHA512
eff7b78e5a326ae7d46177c2f7c8bbd85c5be700c5adac80eaea25b5d0cb59af081f0cf31dcb421cdac76cff9a7718bccb13d90d5d420e8618d8a96cae8befa5

Download Submit
memory/1224-10-0x0000000074DA0000-0x000000007534B000-memory.dmp

Filesize
5.7MB

Download
memory/1224-11-0x0000000074DA0000-0x000000007534B000-memory.dmp

Filesize
5.7MB

Download
memory/1224-12-0x0000000074DA0000-0x000000007534B000-memory.dmp

Filesize
5.7MB

Download
memory/1224-15-0x0000000074DA0000-0x000000007534B000-memory.dmp

Filesize
5.7MB

Download
memory/2084-0-0x0000000074DA1000-0x0000000074DA2000-memory.dmp

Filesize
4KB

Download
memory/2084-2-0x0000000074DA0000-0x000000007534B000-memory.dmp

Filesize
5.7MB

Download
memory/2084-1-0x0000000074DA0000-0x000000007534B000-memory.dmp

Filesize
5.7MB

Download
memory/2084-39-0x0000000074DA0000-0x000000007534B000-memory.dmp

Filesize
5.7MB

Download
memory/2132-37-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2132-20-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2132-36-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2132-34-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2132-32-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2132-30-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2132-28-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2132-26-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2132-24-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2132-22-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2132-40-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2132-51-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads