orcus | cb7b2073f4b7a81d1e0879dc71338a2088004597310d1f9bd381648e20cae23e

Analysis

max time kernel
131s
max time network
140s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
14-12-2024 01:06

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General

Target

cb7b2073f4b7a81d1e0879dc71338a2088004597310d1f9bd381648e20cae23e.exe
Size

3.0MB
MD5

75785429ec057cf563dec468d1048a18
SHA1

495bbf43c88514d4bc60d0cb6deafd4465aea4ed
SHA256

cb7b2073f4b7a81d1e0879dc71338a2088004597310d1f9bd381648e20cae23e
SHA512

a752528e0b43320e48b4da8e76bda59ec8d4ce212b207aaa8927520aa2b6c15bd28a148f457f561a693ebbd676918c980e544c547d29e244690e2347f6f1e5fa
SSDEEP

49152:2P7p1EZKMnkmWg8LX5prviYDyKS5AypQxbRQAo9JnCmpiu/nRFfjI7L0qb+:2PHTPJg8z1mKnypSbRxo9JCm3

Score

10^/10

orcus mamont discovery rat spyware stealer

Malware Config

Extracted

Family

orcus

Botnet

Mamont

31.44.184.52:38135

Mutex

sudo_hukjod904skbxj09l4njrec7guj3gu0r

Attributes

autostart_method
Disable
enable_keylogger
false
install_path
C:\ProgramData\$77RegAsm.exe
reconnect_delay
10000
registry_keyname
Sudik
taskscheduler_taskname
sudik
watchdog_path
AppData\aga.exe

Signatures

Orcus
Orcus is a Remote Access Trojan that is being sold on underground forums.
rat spyware stealer orcus
Orcus family
orcus

Orcus main payload 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023c94-13.dat	family_orcus

Orcurs Rat Executable 3 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023c94-13.dat	orcus
behavioral2/memory/1756-21-0x0000000000400000-0x0000000000704000-memory.dmp	orcus
behavioral2/memory/1976-24-0x0000000000060000-0x000000000035E000-memory.dmp	orcus

Checks computer location settings 2 TTPs 2 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation	cb7b2073f4b7a81d1e0879dc71338a2088004597310d1f9bd381648e20cae23e.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation	JJSploit_8.10.7_x64-setup_bundle.exe

Executes dropped EXE 8 IoCs

pid	Process
2396	JJSploit_8.10.7_x64-setup.exe
1976	JJSploit_8.10.7_x64-setup_bundle.exe
4700	$77RegAsm.exe
1100	$77RegAsm.exe
4884	$77RegAsm.exe
3588	$77RegAsm.exe
4484	$77RegAsm.exe
1480	$77RegAsm.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 4700 set thread context of 3712	4700	$77RegAsm.exe	88
PID 1100 set thread context of 656	1100	$77RegAsm.exe	90
PID 4884 set thread context of 2412	4884	$77RegAsm.exe	92

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 12 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	$77RegAsm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	$77RegAsm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	$77RegAsm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	$77RegAsm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	$77RegAsm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cb7b2073f4b7a81d1e0879dc71338a2088004597310d1f9bd381648e20cae23e.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JJSploit_8.10.7_x64-setup.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JJSploit_8.10.7_x64-setup_bundle.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	$77RegAsm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	regasm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	installutil.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	msbuild.exe

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
1976	JJSploit_8.10.7_x64-setup_bundle.exe
4700	$77RegAsm.exe
4700	$77RegAsm.exe
4700	$77RegAsm.exe
4700	$77RegAsm.exe
1100	$77RegAsm.exe
1100	$77RegAsm.exe
4884	$77RegAsm.exe
4884	$77RegAsm.exe
656	installutil.exe
656	installutil.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	1976	JJSploit_8.10.7_x64-setup_bundle.exe
Token: SeDebugPrivilege	4700	$77RegAsm.exe
Token: SeDebugPrivilege	1100	$77RegAsm.exe
Token: SeDebugPrivilege	4884	$77RegAsm.exe
Token: SeDebugPrivilege	656	installutil.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 1756 wrote to memory of 2396	1756	cb7b2073f4b7a81d1e0879dc71338a2088004597310d1f9bd381648e20cae23e.exe	83
PID 1756 wrote to memory of 2396	1756	cb7b2073f4b7a81d1e0879dc71338a2088004597310d1f9bd381648e20cae23e.exe	83
PID 1756 wrote to memory of 2396	1756	cb7b2073f4b7a81d1e0879dc71338a2088004597310d1f9bd381648e20cae23e.exe	83
PID 1756 wrote to memory of 1976	1756	cb7b2073f4b7a81d1e0879dc71338a2088004597310d1f9bd381648e20cae23e.exe	84
PID 1756 wrote to memory of 1976	1756	cb7b2073f4b7a81d1e0879dc71338a2088004597310d1f9bd381648e20cae23e.exe	84
PID 1756 wrote to memory of 1976	1756	cb7b2073f4b7a81d1e0879dc71338a2088004597310d1f9bd381648e20cae23e.exe	84
PID 1976 wrote to memory of 4700	1976	JJSploit_8.10.7_x64-setup_bundle.exe	85
PID 1976 wrote to memory of 4700	1976	JJSploit_8.10.7_x64-setup_bundle.exe	85
PID 1976 wrote to memory of 4700	1976	JJSploit_8.10.7_x64-setup_bundle.exe	85
PID 4700 wrote to memory of 3584	4700	$77RegAsm.exe	87
PID 4700 wrote to memory of 3584	4700	$77RegAsm.exe	87
PID 4700 wrote to memory of 3584	4700	$77RegAsm.exe	87
PID 4700 wrote to memory of 3712	4700	$77RegAsm.exe	88
PID 4700 wrote to memory of 3712	4700	$77RegAsm.exe	88
PID 4700 wrote to memory of 3712	4700	$77RegAsm.exe	88
PID 4700 wrote to memory of 3712	4700	$77RegAsm.exe	88
PID 4700 wrote to memory of 3712	4700	$77RegAsm.exe	88
PID 4700 wrote to memory of 3712	4700	$77RegAsm.exe	88
PID 4700 wrote to memory of 3712	4700	$77RegAsm.exe	88
PID 4700 wrote to memory of 3712	4700	$77RegAsm.exe	88
PID 1100 wrote to memory of 656	1100	$77RegAsm.exe	90
PID 1100 wrote to memory of 656	1100	$77RegAsm.exe	90
PID 1100 wrote to memory of 656	1100	$77RegAsm.exe	90
PID 1100 wrote to memory of 656	1100	$77RegAsm.exe	90
PID 1100 wrote to memory of 656	1100	$77RegAsm.exe	90
PID 1100 wrote to memory of 656	1100	$77RegAsm.exe	90
PID 1100 wrote to memory of 656	1100	$77RegAsm.exe	90
PID 1100 wrote to memory of 656	1100	$77RegAsm.exe	90
PID 4884 wrote to memory of 2412	4884	$77RegAsm.exe	92
PID 4884 wrote to memory of 2412	4884	$77RegAsm.exe	92
PID 4884 wrote to memory of 2412	4884	$77RegAsm.exe	92
PID 4884 wrote to memory of 2412	4884	$77RegAsm.exe	92
PID 4884 wrote to memory of 2412	4884	$77RegAsm.exe	92
PID 4884 wrote to memory of 2412	4884	$77RegAsm.exe	92
PID 4884 wrote to memory of 2412	4884	$77RegAsm.exe	92
PID 4884 wrote to memory of 2412	4884	$77RegAsm.exe	92

C:\Users\Admin\AppData\Local\Temp\cb7b2073f4b7a81d1e0879dc71338a2088004597310d1f9bd381648e20cae23e.exe
"C:\Users\Admin\AppData\Local\Temp\cb7b2073f4b7a81d1e0879dc71338a2088004597310d1f9bd381648e20cae23e.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1756
- C:\Users\Admin\AppData\Local\Temp\JJSploit_8.10.7_x64-setup.exe
  "C:\Users\Admin\AppData\Local\Temp\JJSploit_8.10.7_x64-setup.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:2396
- C:\Users\Admin\AppData\Local\Temp\JJSploit_8.10.7_x64-setup_bundle.exe
  "C:\Users\Admin\AppData\Local\Temp\JJSploit_8.10.7_x64-setup_bundle.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1976
- - C:\ProgramData\$77RegAsm.exe
    "C:\ProgramData\$77RegAsm.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:4700
  - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe"
      4⤵
      PID:3584
  - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe"
      4⤵
      System Location Discovery: System Language Discovery
      PID:3712

C:\ProgramData\$77RegAsm.exe
C:\ProgramData\$77RegAsm.exe
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1100
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\installutil.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\installutil.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:656

C:\ProgramData\$77RegAsm.exe
C:\ProgramData\$77RegAsm.exe
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4884
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\msbuild.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\msbuild.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2412

C:\ProgramData\$77RegAsm.exe
C:\ProgramData\$77RegAsm.exe
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:3588

C:\ProgramData\$77RegAsm.exe
C:\ProgramData\$77RegAsm.exe
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:4484

C:\ProgramData\$77RegAsm.exe
C:\ProgramData\$77RegAsm.exe
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:1480

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

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

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Downloads

C:\ProgramData\$77RegAsm.exe.config

Filesize
357B

MD5
a2b76cea3a59fa9af5ea21ff68139c98

SHA1
35d76475e6a54c168f536e30206578babff58274

SHA256
f99ef5bf79a7c43701877f0bb0b890591885bb0a3d605762647cc8ffbf10c839

SHA512
b52608b45153c489419228864ecbcb92be24c644d470818dfe15f8c7e661a7bcd034ea13ef401f2b84ad5c29a41c9b4c7d161cc33ae3ef71659bc2bca1a8c4ad

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\$77RegAsm.exe.log

Filesize
1KB

MD5
663b8d5469caa4489d463aa9bc18124f

SHA1
e57123a7d969115853ea631a3b33826335025d28

SHA256
7b4fa505452f0b8ac74bb31f5a03b13342836318018fb18d224ae2ff11b1a7e8

SHA512
45e373295125a629fcc0b19609608d969c9106514918bfac5d6b8e340e407434577b825741b8fa6a043c8f3f5c1a030ba8857da5f4e8ef15a551ce3c5fe03b55

Download Submit
C:\Users\Admin\AppData\Local\Temp\JJSploit_8.10.7_x64-setup.exe

Filesize
9KB

MD5
26abb9e459e5976f658ce80d6433f1b1

SHA1
3c8f02c1cf7b8ae82be3deea4b360497f6fee1c3

SHA256
60cc77b5d4210cef0a9032908b179142f212155426fdae48055c5f72811f7a12

SHA512
c2c02aa1db8036c7309100bb683ec7708fedfb129d763d86e03d9d6adc3688423ec04cb5b596eaf99300787f90d641e53350e1ceed0e8b11d6f29333e04b4ce8

Download Submit
C:\Users\Admin\AppData\Local\Temp\JJSploit_8.10.7_x64-setup_bundle.exe

Filesize
3.0MB

MD5
a5c760e458503463ed3902bdbf605e4e

SHA1
2fb83c914783070267e42dbad89fd2c7afc9d9af

SHA256
790c0d272971a137154f73bb6cb829ac88a9fa9dceaee1e656392dc8bc1e0c32

SHA512
5b905facc4db2afb1dec0460b965c705c2566d91e2db7a95bc23cbd7dc8cbdb9414d4b4a6306e7a57d5ff4eb658910f12497608d5442cc5d8c740dc5be446b5b

Download Submit
memory/656-71-0x0000000007560000-0x000000000759C000-memory.dmp

Filesize
240KB

Download
memory/656-74-0x00000000080A0000-0x0000000008262000-memory.dmp

Filesize
1.8MB

Download
memory/656-73-0x0000000007730000-0x000000000783A000-memory.dmp

Filesize
1.0MB

Download
memory/656-72-0x00000000075A0000-0x00000000075EC000-memory.dmp

Filesize
304KB

Download
memory/656-75-0x0000000007900000-0x000000000790E000-memory.dmp

Filesize
56KB

Download
memory/656-70-0x0000000007500000-0x0000000007512000-memory.dmp

Filesize
72KB

Download
memory/656-68-0x0000000007A80000-0x0000000008098000-memory.dmp

Filesize
6.1MB

Download
memory/656-76-0x0000000008640000-0x0000000008690000-memory.dmp

Filesize
320KB

Download
memory/656-66-0x00000000073F0000-0x0000000007456000-memory.dmp

Filesize
408KB

Download
memory/656-63-0x0000000006B50000-0x0000000006B5A000-memory.dmp

Filesize
40KB

Download
memory/656-62-0x0000000005E80000-0x0000000005E90000-memory.dmp

Filesize
64KB

Download
memory/656-61-0x0000000005E50000-0x0000000005E68000-memory.dmp

Filesize
96KB

Download
memory/1756-21-0x0000000000400000-0x0000000000704000-memory.dmp

Filesize
3.0MB

Download
memory/1976-25-0x0000000004CB0000-0x0000000004CBE000-memory.dmp

Filesize
56KB

Download
memory/1976-28-0x0000000005720000-0x0000000005CC4000-memory.dmp

Filesize
5.6MB

Download
memory/1976-23-0x00000000752EE000-0x00000000752EF000-memory.dmp

Filesize
4KB

Download
memory/1976-24-0x0000000000060000-0x000000000035E000-memory.dmp

Filesize
3.0MB

Download
memory/1976-26-0x00000000752E0000-0x0000000075A90000-memory.dmp

Filesize
7.7MB

Download
memory/1976-46-0x00000000752E0000-0x0000000075A90000-memory.dmp

Filesize
7.7MB

Download
memory/1976-27-0x0000000004D00000-0x0000000004D5C000-memory.dmp

Filesize
368KB

Download
memory/1976-30-0x0000000004F80000-0x0000000004F92000-memory.dmp

Filesize
72KB

Download
memory/1976-29-0x0000000005170000-0x0000000005202000-memory.dmp

Filesize
584KB

Download
memory/2396-9-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download
memory/4700-49-0x0000000005B10000-0x0000000005B22000-memory.dmp

Filesize
72KB

Download
memory/4700-47-0x00000000752E0000-0x0000000075A90000-memory.dmp

Filesize
7.7MB

Download
memory/4700-48-0x00000000752E0000-0x0000000075A90000-memory.dmp

Filesize
7.7MB

Download
memory/4700-52-0x0000000006AA0000-0x0000000006B3C000-memory.dmp

Filesize
624KB

Download
memory/4700-50-0x0000000006160000-0x00000000061AE000-memory.dmp

Filesize
312KB

Download
memory/4700-55-0x00000000752E0000-0x0000000075A90000-memory.dmp

Filesize
7.7MB

Download