orcus | 83ac16bba801faed474b5c2bdd3580f0a71f06d4ac1137dd7469ef0304e268a4

General

Target

83ac16bba801faed474b5c2bdd3580f0a71f06d4ac1137dd7469ef0304e268a4.exe
Size

3.0MB
MD5

ac76227a45da223c1248bfba2e0a05a5
SHA1

f6666bdab8dfa1b9fe2e868f009eaeb53b94e075
SHA256

83ac16bba801faed474b5c2bdd3580f0a71f06d4ac1137dd7469ef0304e268a4
SHA512

6cb7710f318d5b825bf70aa8e295ef1685d99ec014940c43866380615ab96e0e26941f15363c2f5723bd82d49c239d0ae57297f9f84722e616052c216e126c84
SSDEEP

49152:ZGX87p1EZKMnkmWg8LX5prviYDyKS5AypQxbRQAo9JnCmpKu/nRFfjI7L0qb:ZLHTPJg8z1mKnypSbRxo9JCm

Score

10^/10

orcus solara discovery rat spyware stealer

Malware Config

Extracted

Family

orcus

Botnet

Solara

C2

31.44.184.52:61350

Mutex

sudo_j5pcejzfqw2c1rqa7jo5gb6vecolgm7g

Attributes

autostart_method
Disable
enable_keylogger
false
install_path
%appdata%\serverphpapi\multiauth.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

Processes:

resource	yara_rule
\Users\Admin\AppData\Roaming\serverphpapi\multiauth.exe	family_orcus

Orcurs Rat Executable 10 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1404-1-0x00000000003A0000-0x000000000069E000-memory.dmp	orcus
\Users\Admin\AppData\Roaming\serverphpapi\multiauth.exe	orcus
behavioral1/memory/2312-18-0x00000000003F0000-0x00000000006EE000-memory.dmp	orcus
behavioral1/memory/2672-30-0x0000000000400000-0x00000000006FE000-memory.dmp	orcus
behavioral1/memory/2672-27-0x0000000000400000-0x00000000006FE000-memory.dmp	orcus
behavioral1/memory/2672-35-0x0000000000400000-0x00000000006FE000-memory.dmp	orcus
behavioral1/memory/2672-34-0x0000000000400000-0x00000000006FE000-memory.dmp	orcus
behavioral1/memory/2672-32-0x0000000000400000-0x00000000006FE000-memory.dmp	orcus
behavioral1/memory/2920-58-0x0000000000930000-0x0000000000C2E000-memory.dmp	orcus
behavioral1/memory/840-60-0x0000000000D30000-0x000000000102E000-memory.dmp	orcus

Executes dropped EXE 4 IoCs

Processes:

multiauth.exemultiauth.exemultiauth.exemultiauth.exe

pid process

2312 multiauth.exe
2868 multiauth.exe
2920 multiauth.exe
840 multiauth.exe
Loads dropped DLL 1 IoCs

Processes:

83ac16bba801faed474b5c2bdd3580f0a71f06d4ac1137dd7469ef0304e268a4.exe

pid process

1404 83ac16bba801faed474b5c2bdd3580f0a71f06d4ac1137dd7469ef0304e268a4.exe
Reads WinSCP keys stored on the system 2 TTPs
Tries to access WinSCP stored sessions.
spyware stealer

Data from Local System
T1005

Credentials in Registry
T1552.002
Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001
Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003
Suspicious use of SetThreadContext 1 IoCs

Processes:

multiauth.exe

description pid process target process

PID 2312 set thread context of 2672 2312 multiauth.exe regasm.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2312	multiauth.exe
2868	multiauth.exe
2920	multiauth.exe
840	multiauth.exe

pid	process
1404	83ac16bba801faed474b5c2bdd3580f0a71f06d4ac1137dd7469ef0304e268a4.exe

description	pid	process	target process
PID 2312 set thread context of 2672	2312	multiauth.exe	regasm.exe

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:

multiauth.exemultiauth.exeregasm.exemultiauth.exemultiauth.exe83ac16bba801faed474b5c2bdd3580f0a71f06d4ac1137dd7469ef0304e268a4.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	multiauth.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	multiauth.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	regasm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	multiauth.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	multiauth.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	83ac16bba801faed474b5c2bdd3580f0a71f06d4ac1137dd7469ef0304e268a4.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

Processes:

83ac16bba801faed474b5c2bdd3580f0a71f06d4ac1137dd7469ef0304e268a4.exemultiauth.exeregasm.exe

pid process

1404 83ac16bba801faed474b5c2bdd3580f0a71f06d4ac1137dd7469ef0304e268a4.exe
2312 multiauth.exe
2312 multiauth.exe
2672 regasm.exe
2672 regasm.exe

pid	process
1404	83ac16bba801faed474b5c2bdd3580f0a71f06d4ac1137dd7469ef0304e268a4.exe
2312	multiauth.exe
2312	multiauth.exe
2672	regasm.exe
2672	regasm.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

83ac16bba801faed474b5c2bdd3580f0a71f06d4ac1137dd7469ef0304e268a4.exemultiauth.exeregasm.exe

description	pid	process
Token: SeDebugPrivilege	1404	83ac16bba801faed474b5c2bdd3580f0a71f06d4ac1137dd7469ef0304e268a4.exe
Token: SeDebugPrivilege	2312	multiauth.exe
Token: SeDebugPrivilege	2672	regasm.exe

Suspicious use of WriteProcessMemory 28 IoCs

Processes:

83ac16bba801faed474b5c2bdd3580f0a71f06d4ac1137dd7469ef0304e268a4.exetaskeng.exemultiauth.exe

description	pid	process	target process
PID 1404 wrote to memory of 2312	1404	83ac16bba801faed474b5c2bdd3580f0a71f06d4ac1137dd7469ef0304e268a4.exe	multiauth.exe
PID 1404 wrote to memory of 2312	1404	83ac16bba801faed474b5c2bdd3580f0a71f06d4ac1137dd7469ef0304e268a4.exe	multiauth.exe
PID 1404 wrote to memory of 2312	1404	83ac16bba801faed474b5c2bdd3580f0a71f06d4ac1137dd7469ef0304e268a4.exe	multiauth.exe
PID 1404 wrote to memory of 2312	1404	83ac16bba801faed474b5c2bdd3580f0a71f06d4ac1137dd7469ef0304e268a4.exe	multiauth.exe
PID 2772 wrote to memory of 2868	2772	taskeng.exe	multiauth.exe
PID 2772 wrote to memory of 2868	2772	taskeng.exe	multiauth.exe
PID 2772 wrote to memory of 2868	2772	taskeng.exe	multiauth.exe
PID 2772 wrote to memory of 2868	2772	taskeng.exe	multiauth.exe
PID 2312 wrote to memory of 2672	2312	multiauth.exe	regasm.exe
PID 2312 wrote to memory of 2672	2312	multiauth.exe	regasm.exe
PID 2312 wrote to memory of 2672	2312	multiauth.exe	regasm.exe
PID 2312 wrote to memory of 2672	2312	multiauth.exe	regasm.exe
PID 2312 wrote to memory of 2672	2312	multiauth.exe	regasm.exe
PID 2312 wrote to memory of 2672	2312	multiauth.exe	regasm.exe
PID 2312 wrote to memory of 2672	2312	multiauth.exe	regasm.exe
PID 2312 wrote to memory of 2672	2312	multiauth.exe	regasm.exe
PID 2312 wrote to memory of 2672	2312	multiauth.exe	regasm.exe
PID 2312 wrote to memory of 2672	2312	multiauth.exe	regasm.exe
PID 2312 wrote to memory of 2672	2312	multiauth.exe	regasm.exe
PID 2312 wrote to memory of 2672	2312	multiauth.exe	regasm.exe
PID 2772 wrote to memory of 2920	2772	taskeng.exe	multiauth.exe
PID 2772 wrote to memory of 2920	2772	taskeng.exe	multiauth.exe
PID 2772 wrote to memory of 2920	2772	taskeng.exe	multiauth.exe
PID 2772 wrote to memory of 2920	2772	taskeng.exe	multiauth.exe
PID 2772 wrote to memory of 840	2772	taskeng.exe	multiauth.exe
PID 2772 wrote to memory of 840	2772	taskeng.exe	multiauth.exe
PID 2772 wrote to memory of 840	2772	taskeng.exe	multiauth.exe
PID 2772 wrote to memory of 840	2772	taskeng.exe	multiauth.exe

C:\Users\Admin\AppData\Local\Temp\83ac16bba801faed474b5c2bdd3580f0a71f06d4ac1137dd7469ef0304e268a4.exe
"C:\Users\Admin\AppData\Local\Temp\83ac16bba801faed474b5c2bdd3580f0a71f06d4ac1137dd7469ef0304e268a4.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1404
- C:\Users\Admin\AppData\Roaming\serverphpapi\multiauth.exe
  "C:\Users\Admin\AppData\Roaming\serverphpapi\multiauth.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:2312
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2672

C:\Windows\system32\taskeng.exe
taskeng.exe {903A1A8C-9494-446C-B2CA-26ADD2E6E16F} S-1-5-21-3290804112-2823094203-3137964600-1000:VORHPBAB\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:2772
- C:\Users\Admin\AppData\Roaming\serverphpapi\multiauth.exe
  C:\Users\Admin\AppData\Roaming\serverphpapi\multiauth.exe
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:2868
- C:\Users\Admin\AppData\Roaming\serverphpapi\multiauth.exe
  C:\Users\Admin\AppData\Roaming\serverphpapi\multiauth.exe
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:2920
- C:\Users\Admin\AppData\Roaming\serverphpapi\multiauth.exe
  C:\Users\Admin\AppData\Roaming\serverphpapi\multiauth.exe
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:840

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

3

T1552

Credentials In Files

2

T1552.001

Credentials in Registry

1

T1552.002

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

3

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\CabE90A.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Roaming\serverphpapi\multiauth.exe.config

Filesize
357B

MD5
a2b76cea3a59fa9af5ea21ff68139c98

SHA1
35d76475e6a54c168f536e30206578babff58274

SHA256
f99ef5bf79a7c43701877f0bb0b890591885bb0a3d605762647cc8ffbf10c839

SHA512
b52608b45153c489419228864ecbcb92be24c644d470818dfe15f8c7e661a7bcd034ea13ef401f2b84ad5c29a41c9b4c7d161cc33ae3ef71659bc2bca1a8c4ad

Download Submit
\Users\Admin\AppData\Roaming\serverphpapi\multiauth.exe

Filesize
3.0MB

MD5
ac76227a45da223c1248bfba2e0a05a5

SHA1
f6666bdab8dfa1b9fe2e868f009eaeb53b94e075

SHA256
83ac16bba801faed474b5c2bdd3580f0a71f06d4ac1137dd7469ef0304e268a4

SHA512
6cb7710f318d5b825bf70aa8e295ef1685d99ec014940c43866380615ab96e0e26941f15363c2f5723bd82d49c239d0ae57297f9f84722e616052c216e126c84

Download Submit
memory/840-60-0x0000000000D30000-0x000000000102E000-memory.dmp

Filesize
3.0MB

Download
memory/1404-17-0x0000000074630000-0x0000000074D1E000-memory.dmp

Filesize
6.9MB

Download
memory/1404-1-0x00000000003A0000-0x000000000069E000-memory.dmp

Filesize
3.0MB

Download
memory/1404-2-0x0000000000270000-0x000000000027E000-memory.dmp

Filesize
56KB

Download
memory/1404-3-0x0000000074630000-0x0000000074D1E000-memory.dmp

Filesize
6.9MB

Download
memory/1404-4-0x0000000000920000-0x000000000097C000-memory.dmp

Filesize
368KB

Download
memory/1404-5-0x00000000006C0000-0x00000000006D2000-memory.dmp

Filesize
72KB

Download
memory/1404-0-0x000000007463E000-0x000000007463F000-memory.dmp

Filesize
4KB

Download
memory/2312-16-0x0000000074630000-0x0000000074D1E000-memory.dmp

Filesize
6.9MB

Download
memory/2312-20-0x00000000008C0000-0x00000000008D2000-memory.dmp

Filesize
72KB

Download
memory/2312-21-0x0000000004390000-0x00000000043DE000-memory.dmp

Filesize
312KB

Download
memory/2312-19-0x0000000074630000-0x0000000074D1E000-memory.dmp

Filesize
6.9MB

Download
memory/2312-18-0x00000000003F0000-0x00000000006EE000-memory.dmp

Filesize
3.0MB

Download
memory/2312-33-0x0000000074630000-0x0000000074D1E000-memory.dmp

Filesize
6.9MB

Download
memory/2672-25-0x0000000000400000-0x00000000006FE000-memory.dmp

Filesize
3.0MB

Download
memory/2672-36-0x00000000007D0000-0x00000000007E2000-memory.dmp

Filesize
72KB

Download
memory/2672-34-0x0000000000400000-0x00000000006FE000-memory.dmp

Filesize
3.0MB

Download
memory/2672-27-0x0000000000400000-0x00000000006FE000-memory.dmp

Filesize
3.0MB

Download
memory/2672-32-0x0000000000400000-0x00000000006FE000-memory.dmp

Filesize
3.0MB

Download
memory/2672-31-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2672-37-0x0000000000BB0000-0x0000000000BC8000-memory.dmp

Filesize
96KB

Download
memory/2672-35-0x0000000000400000-0x00000000006FE000-memory.dmp

Filesize
3.0MB

Download
memory/2672-38-0x0000000000C40000-0x0000000000C50000-memory.dmp

Filesize
64KB

Download
memory/2672-30-0x0000000000400000-0x00000000006FE000-memory.dmp

Filesize
3.0MB

Download
memory/2672-55-0x00000000011B0000-0x00000000011BE000-memory.dmp

Filesize
56KB

Download
memory/2672-56-0x0000000005020000-0x0000000005022000-memory.dmp

Filesize
8KB

Download
memory/2672-23-0x0000000000400000-0x00000000006FE000-memory.dmp

Filesize
3.0MB

Download
memory/2920-58-0x0000000000930000-0x0000000000C2E000-memory.dmp

Filesize
3.0MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads