orcus | 225b6199e42b79355c1bed89cf53ddd3ccfb8f407637951501fefe01105761f9

General

Target

225b6199e42b79355c1bed89cf53ddd3ccfb8f407637951501fefe01105761f9.exe
Size

3.0MB
MD5

c0425594cb2719131850869093fdac64
SHA1

57801983f722353632cbe6338619f274c59d5caf
SHA256

225b6199e42b79355c1bed89cf53ddd3ccfb8f407637951501fefe01105761f9
SHA512

a48f63e4b44522c61feff0a7d44af41250ba3264c989d8e1e50c7fee0c4b90b5a3e2b7984da5098874d4368cd7196419b9815b4fe002558ddecafa225cdaf328
SSDEEP

49152:4s7p1EZKMnkmWg8LX5prviYDyKS5AypQxbRQAo9JnCmpau/nRFfjI7L0qb:4sHTPJg8z1mKnypSbRxo9JCm

Score

10^/10

orcus niggers discovery rat spyware stealer

Malware Config

Extracted

Family

orcus

Botnet

niggers

C2

31.44.184.52:16749

Mutex

sudo_ai8hybb6bfsu8cdberulrqxurblwtews

Attributes

autostart_method
Disable
enable_keylogger
false
install_path
%appdata%\cpuflower\windowsauth.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/0x000b000000023b53-13.dat	family_orcus

Orcurs Rat Executable 2 IoCs

resource	yara_rule
behavioral2/memory/4828-1-0x0000000000E30000-0x000000000112E000-memory.dmp	orcus
behavioral2/files/0x000b000000023b53-13.dat	orcus

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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3625106387-4207083342-115176794-1000\Control Panel\International\Geo\Nation	225b6199e42b79355c1bed89cf53ddd3ccfb8f407637951501fefe01105761f9.exe

Executes dropped EXE 4 IoCs

pid	Process
4636	windowsauth.exe
3384	windowsauth.exe
3768	windowsauth.exe
4468	windowsauth.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4636 set thread context of 4836	4636	windowsauth.exe	89

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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	windowsauth.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	225b6199e42b79355c1bed89cf53ddd3ccfb8f407637951501fefe01105761f9.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	windowsauth.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	msbuild.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	windowsauth.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	windowsauth.exe

Suspicious behavior: EnumeratesProcesses 7 IoCs

pid	Process
4828	225b6199e42b79355c1bed89cf53ddd3ccfb8f407637951501fefe01105761f9.exe
4636	windowsauth.exe
4636	windowsauth.exe
4636	windowsauth.exe
4636	windowsauth.exe
4836	msbuild.exe
4836	msbuild.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	4828	225b6199e42b79355c1bed89cf53ddd3ccfb8f407637951501fefe01105761f9.exe
Token: SeDebugPrivilege	4636	windowsauth.exe
Token: SeDebugPrivilege	4836	msbuild.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 4828 wrote to memory of 4636	4828	225b6199e42b79355c1bed89cf53ddd3ccfb8f407637951501fefe01105761f9.exe	86
PID 4828 wrote to memory of 4636	4828	225b6199e42b79355c1bed89cf53ddd3ccfb8f407637951501fefe01105761f9.exe	86
PID 4828 wrote to memory of 4636	4828	225b6199e42b79355c1bed89cf53ddd3ccfb8f407637951501fefe01105761f9.exe	86
PID 4636 wrote to memory of 1332	4636	windowsauth.exe	88
PID 4636 wrote to memory of 1332	4636	windowsauth.exe	88
PID 4636 wrote to memory of 1332	4636	windowsauth.exe	88
PID 4636 wrote to memory of 4836	4636	windowsauth.exe	89
PID 4636 wrote to memory of 4836	4636	windowsauth.exe	89
PID 4636 wrote to memory of 4836	4636	windowsauth.exe	89
PID 4636 wrote to memory of 4836	4636	windowsauth.exe	89
PID 4636 wrote to memory of 4836	4636	windowsauth.exe	89
PID 4636 wrote to memory of 4836	4636	windowsauth.exe	89
PID 4636 wrote to memory of 4836	4636	windowsauth.exe	89
PID 4636 wrote to memory of 4836	4636	windowsauth.exe	89

C:\Users\Admin\AppData\Local\Temp\225b6199e42b79355c1bed89cf53ddd3ccfb8f407637951501fefe01105761f9.exe
"C:\Users\Admin\AppData\Local\Temp\225b6199e42b79355c1bed89cf53ddd3ccfb8f407637951501fefe01105761f9.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4828
- C:\Users\Admin\AppData\Roaming\cpuflower\windowsauth.exe
  "C:\Users\Admin\AppData\Roaming\cpuflower\windowsauth.exe"
  2⤵
  - 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:4636
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\msbuild.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\msbuild.exe"
    3⤵
    PID:1332
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\msbuild.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\msbuild.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4836

C:\Users\Admin\AppData\Roaming\cpuflower\windowsauth.exe
C:\Users\Admin\AppData\Roaming\cpuflower\windowsauth.exe
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:3384

C:\Users\Admin\AppData\Roaming\cpuflower\windowsauth.exe
C:\Users\Admin\AppData\Roaming\cpuflower\windowsauth.exe
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:3768

C:\Users\Admin\AppData\Roaming\cpuflower\windowsauth.exe
C:\Users\Admin\AppData\Roaming\cpuflower\windowsauth.exe
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:4468

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\windowsauth.exe.log

Filesize
1KB

MD5
663b8d5469caa4489d463aa9bc18124f

SHA1
e57123a7d969115853ea631a3b33826335025d28

SHA256
7b4fa505452f0b8ac74bb31f5a03b13342836318018fb18d224ae2ff11b1a7e8

SHA512
45e373295125a629fcc0b19609608d969c9106514918bfac5d6b8e340e407434577b825741b8fa6a043c8f3f5c1a030ba8857da5f4e8ef15a551ce3c5fe03b55

Download Submit
C:\Users\Admin\AppData\Roaming\cpuflower\windowsauth.exe

Filesize
3.0MB

MD5
c0425594cb2719131850869093fdac64

SHA1
57801983f722353632cbe6338619f274c59d5caf

SHA256
225b6199e42b79355c1bed89cf53ddd3ccfb8f407637951501fefe01105761f9

SHA512
a48f63e4b44522c61feff0a7d44af41250ba3264c989d8e1e50c7fee0c4b90b5a3e2b7984da5098874d4368cd7196419b9815b4fe002558ddecafa225cdaf328

Download Submit
C:\Users\Admin\AppData\Roaming\cpuflower\windowsauth.exe.config

Filesize
357B

MD5
a2b76cea3a59fa9af5ea21ff68139c98

SHA1
35d76475e6a54c168f536e30206578babff58274

SHA256
f99ef5bf79a7c43701877f0bb0b890591885bb0a3d605762647cc8ffbf10c839

SHA512
b52608b45153c489419228864ecbcb92be24c644d470818dfe15f8c7e661a7bcd034ea13ef401f2b84ad5c29a41c9b4c7d161cc33ae3ef71659bc2bca1a8c4ad

Download Submit
memory/4636-32-0x0000000075200000-0x00000000759B0000-memory.dmp

Filesize
7.7MB

Download
memory/4636-26-0x0000000006A60000-0x0000000006AAE000-memory.dmp

Filesize
312KB

Download
memory/4636-28-0x0000000006CC0000-0x0000000006D5C000-memory.dmp

Filesize
624KB

Download
memory/4636-25-0x0000000075200000-0x00000000759B0000-memory.dmp

Filesize
7.7MB

Download
memory/4636-23-0x0000000075200000-0x00000000759B0000-memory.dmp

Filesize
7.7MB

Download
memory/4828-3-0x0000000075200000-0x00000000759B0000-memory.dmp

Filesize
7.7MB

Download
memory/4828-2-0x0000000003380000-0x000000000338E000-memory.dmp

Filesize
56KB

Download
memory/4828-7-0x0000000006350000-0x0000000006362000-memory.dmp

Filesize
72KB

Download
memory/4828-24-0x0000000075200000-0x00000000759B0000-memory.dmp

Filesize
7.7MB

Download
memory/4828-6-0x0000000005E60000-0x0000000005EF2000-memory.dmp

Filesize
584KB

Download
memory/4828-4-0x0000000005D20000-0x0000000005D7C000-memory.dmp

Filesize
368KB

Download
memory/4828-5-0x0000000006410000-0x00000000069B4000-memory.dmp

Filesize
5.6MB

Download
memory/4828-1-0x0000000000E30000-0x000000000112E000-memory.dmp

Filesize
3.0MB

Download
memory/4828-0-0x000000007520E000-0x000000007520F000-memory.dmp

Filesize
4KB

Download
memory/4836-39-0x0000000007120000-0x0000000007186000-memory.dmp

Filesize
408KB

Download
memory/4836-40-0x00000000077B0000-0x0000000007DC8000-memory.dmp

Filesize
6.1MB

Download
memory/4836-41-0x0000000007230000-0x0000000007242000-memory.dmp

Filesize
72KB

Download
memory/4836-36-0x0000000005D70000-0x0000000005D80000-memory.dmp

Filesize
64KB

Download
memory/4836-31-0x0000000075200000-0x00000000759B0000-memory.dmp

Filesize
7.7MB

Download
memory/4836-37-0x0000000006A00000-0x0000000006A0A000-memory.dmp

Filesize
40KB

Download
memory/4836-35-0x0000000005D40000-0x0000000005D58000-memory.dmp

Filesize
96KB

Download
memory/4836-33-0x0000000075200000-0x00000000759B0000-memory.dmp

Filesize
7.7MB

Download
memory/4836-34-0x0000000005880000-0x0000000005892000-memory.dmp

Filesize
72KB

Download
memory/4836-42-0x0000000007290000-0x00000000072CC000-memory.dmp

Filesize
240KB

Download
memory/4836-43-0x00000000072D0000-0x000000000731C000-memory.dmp

Filesize
304KB

Download
memory/4836-44-0x0000000007460000-0x000000000756A000-memory.dmp

Filesize
1.0MB

Download
memory/4836-45-0x0000000007DD0000-0x0000000007F92000-memory.dmp

Filesize
1.8MB

Download
memory/4836-46-0x0000000007440000-0x000000000744E000-memory.dmp

Filesize
56KB

Download
memory/4836-47-0x0000000008390000-0x00000000083E0000-memory.dmp

Filesize
320KB

Download
memory/4836-48-0x0000000075200000-0x00000000759B0000-memory.dmp

Filesize
7.7MB

Download

Analysis

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