darkcomet | 8b1bb54b6b11b13b7a8222d27b1c4d59edf448c6d6eeae430564f383b91798b3

Analysis

max time kernel
149s
max time network
144s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
29-10-2024 02:16

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General

Target

8b1bb54b6b11b13b7a8222d27b1c4d59edf448c6d6eeae430564f383b91798b3.exe
Size

3.9MB
MD5

d97510f6e3d9a3a19bbf20dbb9622ac7
SHA1

23b87877184e36f1431b6137a2ac224fff85c8ab
SHA256

8b1bb54b6b11b13b7a8222d27b1c4d59edf448c6d6eeae430564f383b91798b3
SHA512

f401bfcc507c044e2d2113157174dfaf6633e4207470e897b9998aacbe801b5ff5acc804f93530d69650567f381e243287eae0cb5ddb3ac338fbcc9bbfa698c4
SSDEEP

98304:8lX3KMj7yBNUVPhd5G0Z5DxdM3hZpmBAlB6D4tyX6kuT4IkQApCgvms0Cv05J5CZ:8lX3KMj7yBNUVPhd5G0Z5DxdM3hZpmBZ

Score

10^/10

darkcomet discovery persistence rat trojan upx

Malware Config

Signatures

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

Checks BIOS information in registry 2 TTPs 1 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

Soundcrd.exe

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	Soundcrd.exe

Executes dropped EXE 3 IoCs

Processes:

Soundcrd.exeSoundcrd.exeSoundcrd.exe

pid	Process
2620	Soundcrd.exe
2624	Soundcrd.exe
2784	Soundcrd.exe

Loads dropped DLL 7 IoCs

Processes:

8b1bb54b6b11b13b7a8222d27b1c4d59edf448c6d6eeae430564f383b91798b3.exeSoundcrd.exe

pid	Process
1852	8b1bb54b6b11b13b7a8222d27b1c4d59edf448c6d6eeae430564f383b91798b3.exe
1852	8b1bb54b6b11b13b7a8222d27b1c4d59edf448c6d6eeae430564f383b91798b3.exe
1852	8b1bb54b6b11b13b7a8222d27b1c4d59edf448c6d6eeae430564f383b91798b3.exe
1852	8b1bb54b6b11b13b7a8222d27b1c4d59edf448c6d6eeae430564f383b91798b3.exe
1852	8b1bb54b6b11b13b7a8222d27b1c4d59edf448c6d6eeae430564f383b91798b3.exe
2620	Soundcrd.exe
2620	Soundcrd.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

reg.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Windows\CurrentVersion\Run\Mcrosoftt = "C:\\Users\\Admin\\AppData\\Roaming\\Soundcrd.exe"	reg.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

Soundcrd.exe

description	pid	Process	procid_target
PID 2620 set thread context of 2624	2620	Soundcrd.exe	32
PID 2620 set thread context of 2784	2620	Soundcrd.exe	33

UPX packed file 20 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/2624-50-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2624-52-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2624-48-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2624-53-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2624-55-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2624-58-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2624-57-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2624-56-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2624-54-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2784-59-0x0000000000400000-0x0000000000409000-memory.dmp	upx
behavioral1/memory/2784-61-0x0000000000400000-0x0000000000409000-memory.dmp	upx
behavioral1/memory/2784-62-0x0000000000400000-0x0000000000409000-memory.dmp	upx
behavioral1/memory/2624-65-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2784-67-0x0000000000400000-0x0000000000409000-memory.dmp	upx
behavioral1/memory/2624-70-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2624-74-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2624-78-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2624-82-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2624-86-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2624-92-0x0000000000400000-0x00000000004B5000-memory.dmp	upx

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 6 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

Processes:

Soundcrd.exe8b1bb54b6b11b13b7a8222d27b1c4d59edf448c6d6eeae430564f383b91798b3.execmd.exereg.exeSoundcrd.exeSoundcrd.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Soundcrd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	8b1bb54b6b11b13b7a8222d27b1c4d59edf448c6d6eeae430564f383b91798b3.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Soundcrd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Soundcrd.exe

Checks processor information in registry 2 TTPs 4 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

Soundcrd.exe

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	Soundcrd.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	Soundcrd.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	Soundcrd.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	Soundcrd.exe

Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry

T1012

System Information Discovery

T1082

Processes:

Soundcrd.exe

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	Soundcrd.exe

Suspicious use of AdjustPrivilegeToken 24 IoCs

Processes:

Soundcrd.exeSoundcrd.exe

description	pid	Process
Token: SeIncreaseQuotaPrivilege	2624	Soundcrd.exe
Token: SeSecurityPrivilege	2624	Soundcrd.exe
Token: SeTakeOwnershipPrivilege	2624	Soundcrd.exe
Token: SeLoadDriverPrivilege	2624	Soundcrd.exe
Token: SeSystemProfilePrivilege	2624	Soundcrd.exe
Token: SeSystemtimePrivilege	2624	Soundcrd.exe
Token: SeProfSingleProcessPrivilege	2624	Soundcrd.exe
Token: SeIncBasePriorityPrivilege	2624	Soundcrd.exe
Token: SeCreatePagefilePrivilege	2624	Soundcrd.exe
Token: SeBackupPrivilege	2624	Soundcrd.exe
Token: SeRestorePrivilege	2624	Soundcrd.exe
Token: SeShutdownPrivilege	2624	Soundcrd.exe
Token: SeDebugPrivilege	2624	Soundcrd.exe
Token: SeSystemEnvironmentPrivilege	2624	Soundcrd.exe
Token: SeChangeNotifyPrivilege	2624	Soundcrd.exe
Token: SeRemoteShutdownPrivilege	2624	Soundcrd.exe
Token: SeUndockPrivilege	2624	Soundcrd.exe
Token: SeManageVolumePrivilege	2624	Soundcrd.exe
Token: SeImpersonatePrivilege	2624	Soundcrd.exe
Token: SeCreateGlobalPrivilege	2624	Soundcrd.exe
Token: 33	2624	Soundcrd.exe
Token: 34	2624	Soundcrd.exe
Token: 35	2624	Soundcrd.exe
Token: SeDebugPrivilege	2784	Soundcrd.exe

Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

8b1bb54b6b11b13b7a8222d27b1c4d59edf448c6d6eeae430564f383b91798b3.exeSoundcrd.exeSoundcrd.exe

pid	Process
1852	8b1bb54b6b11b13b7a8222d27b1c4d59edf448c6d6eeae430564f383b91798b3.exe
2620	Soundcrd.exe
2784	Soundcrd.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

8b1bb54b6b11b13b7a8222d27b1c4d59edf448c6d6eeae430564f383b91798b3.execmd.exeSoundcrd.exe

description	pid	Process	procid_target
PID 1852 wrote to memory of 2980	1852	8b1bb54b6b11b13b7a8222d27b1c4d59edf448c6d6eeae430564f383b91798b3.exe	28
PID 1852 wrote to memory of 2980	1852	8b1bb54b6b11b13b7a8222d27b1c4d59edf448c6d6eeae430564f383b91798b3.exe	28
PID 1852 wrote to memory of 2980	1852	8b1bb54b6b11b13b7a8222d27b1c4d59edf448c6d6eeae430564f383b91798b3.exe	28
PID 1852 wrote to memory of 2980	1852	8b1bb54b6b11b13b7a8222d27b1c4d59edf448c6d6eeae430564f383b91798b3.exe	28
PID 2980 wrote to memory of 2584	2980	cmd.exe	30
PID 2980 wrote to memory of 2584	2980	cmd.exe	30
PID 2980 wrote to memory of 2584	2980	cmd.exe	30
PID 2980 wrote to memory of 2584	2980	cmd.exe	30
PID 1852 wrote to memory of 2620	1852	8b1bb54b6b11b13b7a8222d27b1c4d59edf448c6d6eeae430564f383b91798b3.exe	31
PID 1852 wrote to memory of 2620	1852	8b1bb54b6b11b13b7a8222d27b1c4d59edf448c6d6eeae430564f383b91798b3.exe	31
PID 1852 wrote to memory of 2620	1852	8b1bb54b6b11b13b7a8222d27b1c4d59edf448c6d6eeae430564f383b91798b3.exe	31
PID 1852 wrote to memory of 2620	1852	8b1bb54b6b11b13b7a8222d27b1c4d59edf448c6d6eeae430564f383b91798b3.exe	31
PID 2620 wrote to memory of 2624	2620	Soundcrd.exe	32
PID 2620 wrote to memory of 2624	2620	Soundcrd.exe	32
PID 2620 wrote to memory of 2624	2620	Soundcrd.exe	32
PID 2620 wrote to memory of 2624	2620	Soundcrd.exe	32
PID 2620 wrote to memory of 2624	2620	Soundcrd.exe	32
PID 2620 wrote to memory of 2624	2620	Soundcrd.exe	32
PID 2620 wrote to memory of 2624	2620	Soundcrd.exe	32
PID 2620 wrote to memory of 2624	2620	Soundcrd.exe	32
PID 2620 wrote to memory of 2624	2620	Soundcrd.exe	32
PID 2620 wrote to memory of 2784	2620	Soundcrd.exe	33
PID 2620 wrote to memory of 2784	2620	Soundcrd.exe	33
PID 2620 wrote to memory of 2784	2620	Soundcrd.exe	33
PID 2620 wrote to memory of 2784	2620	Soundcrd.exe	33
PID 2620 wrote to memory of 2784	2620	Soundcrd.exe	33
PID 2620 wrote to memory of 2784	2620	Soundcrd.exe	33
PID 2620 wrote to memory of 2784	2620	Soundcrd.exe	33
PID 2620 wrote to memory of 2784	2620	Soundcrd.exe	33
PID 2620 wrote to memory of 2784	2620	Soundcrd.exe	33

C:\Users\Admin\AppData\Local\Temp\8b1bb54b6b11b13b7a8222d27b1c4d59edf448c6d6eeae430564f383b91798b3.exe
"C:\Users\Admin\AppData\Local\Temp\8b1bb54b6b11b13b7a8222d27b1c4d59edf448c6d6eeae430564f383b91798b3.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1852
- C:\Windows\SysWOW64\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\FUEpt.bat" "
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2980
- - C:\Windows\SysWOW64\reg.exe
    REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /v "Mcrosoftt" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\Soundcrd.exe" /f
    3⤵
    - Adds Run key to start application
    - System Location Discovery: System Language Discovery
    PID:2584
- C:\Users\Admin\AppData\Roaming\Soundcrd.exe
  "C:\Users\Admin\AppData\Roaming\Soundcrd.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2620
- - C:\Users\Admin\AppData\Roaming\Soundcrd.exe
    C:\Users\Admin\AppData\Roaming\Soundcrd.exe
    3⤵
    - Checks BIOS information in registry
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Checks processor information in registry
    - Enumerates system info in registry
    - Suspicious use of AdjustPrivilegeToken
    PID:2624
- - C:\Users\Admin\AppData\Roaming\Soundcrd.exe
    C:\Users\Admin\AppData\Roaming\Soundcrd.exe
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:2784

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\FUEpt.bat

Filesize
139B

MD5
173bcce4810d4901872d0ef4f0bfea4e

SHA1
561b03fdfe68b6419fddf57f32e1aab9a6126a2f

SHA256
10ea37eceabbe80fe9814280b66b957636951dbeeed18a9b4d50a1d24a6f1d1d

SHA512
2401e0a5e3f7bf590a0767449da2249d09717e8c1cb71a7475e81d9615580001cfc38705cd1a5b4edc33f7df043bf195e28e4a5442a32bc879dffc6473bd545e

Download Submit
C:\Users\Admin\AppData\Roaming\Soundcrd.exe

Filesize
3.9MB

MD5
9c129dd86aca028e055aca12e1526aa8

SHA1
b388891e506c0ca92018661ac4397cbbf5262d4a

SHA256
1bf5bc1dca014c2798027d3b430b38a1696781a64d24ed0f0b3b45847d5e51ed

SHA512
23a62d494c53ceea78c6670460611b8d8bd601325f255ac5e2a94ceea5ae65c42bda7bc49dc28039d4e7e84432cf99143235a6379c55f70ba5bea03527fae328

Download Submit
memory/1852-0-0x0000000000400000-0x00000000007E8000-memory.dmp

Filesize
3.9MB

Download
memory/2624-56-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2624-50-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2624-48-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2624-53-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2624-55-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2624-58-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2624-57-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2624-78-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2624-54-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2624-52-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2624-92-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2624-86-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2624-65-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2624-82-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2624-70-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2624-74-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2784-59-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2784-67-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2784-62-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2784-61-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download