orcus | 98cf24d2820d87e587ce0073fb303066192dede2b2a3b319f9d15d7949a25eab

Analysis

max time kernel
150s
max time network
152s
platform
windows10_x64
resource
win10v20210410
submitted
29-06-2021 06:11

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General

Target

98cf24d2820d87e587ce0073fb303066192dede2b2a3b319f9d15d7949a25eab.exe
Size

1.3MB
MD5

fb71ff3ffdd50950d58e5d74f0cb4d36
SHA1

fd0882a725e4ade9b3d5a75a0f1cde65cfb16961
SHA256

98cf24d2820d87e587ce0073fb303066192dede2b2a3b319f9d15d7949a25eab
SHA512

fc594764ffc45d83907c2aaefb76290803f16c341501784e3d716825d613ec95e469da44954b1beac47d8c1d3ffc6f1bff8cbf21b3766a942a29c1611b44dfbf

Score

10^/10

orcus persistence rat spyware stealer

Malware Config

Extracted

Family

orcus

178.5.71.180:80

Mutex

a4d505b115fc4401a4572b6a21933126

Attributes

autostart_method
Registry
enable_keylogger
true
install_path
%programfiles%\HD Audio\HD Audio.exe
reconnect_delay
10000
registry_keyname
Hd Audio
taskscheduler_taskname
Hd audio
watchdog_path
AppData\Yourphone.exe

Signatures

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

Orcus Main Payload 3 IoCs

Processes:

resource	yara_rule
C:\Program Files (x86)\HD Audio\HD Audio.exe	family_orcus
C:\Program Files (x86)\HD Audio\HD Audio.exe	family_orcus
C:\Program Files (x86)\HD Audio\HD Audio.exe	family_orcus

Orcurs Rat Executable 3 IoCs

Processes:

resource	yara_rule
C:\Program Files (x86)\HD Audio\HD Audio.exe	orcus
C:\Program Files (x86)\HD Audio\HD Audio.exe	orcus
C:\Program Files (x86)\HD Audio\HD Audio.exe	orcus

Executes dropped EXE 6 IoCs

Processes:

WindowsInput.exeWindowsInput.exeHD Audio.exeHD Audio.exeYourphone.exeYourphone.exe

pid process

740 WindowsInput.exe
2784 WindowsInput.exe
1096 HD Audio.exe
3612 HD Audio.exe
2352 Yourphone.exe
2704 Yourphone.exe

pid	process
740	WindowsInput.exe
2784	WindowsInput.exe
1096	HD Audio.exe
3612	HD Audio.exe
2352	Yourphone.exe
2704	Yourphone.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

HD Audio.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3686645723-710336880-414668232-1000\Software\Microsoft\Windows\CurrentVersion\Run\Hd Audio = "\"C:\\Program Files (x86)\\HD Audio\\HD Audio.exe\""	HD Audio.exe

Drops file in System32 directory 3 IoCs

Processes:

98cf24d2820d87e587ce0073fb303066192dede2b2a3b319f9d15d7949a25eab.exeWindowsInput.exe

description	ioc	process
File created	C:\Windows\SysWOW64\WindowsInput.exe	98cf24d2820d87e587ce0073fb303066192dede2b2a3b319f9d15d7949a25eab.exe
File created	C:\Windows\SysWOW64\WindowsInput.exe.config	98cf24d2820d87e587ce0073fb303066192dede2b2a3b319f9d15d7949a25eab.exe
File created	C:\Windows\SysWOW64\WindowsInput.InstallState	WindowsInput.exe

Drops file in Program Files directory 3 IoCs

Processes:

98cf24d2820d87e587ce0073fb303066192dede2b2a3b319f9d15d7949a25eab.exe

description	ioc	process
File created	C:\Program Files (x86)\HD Audio\HD Audio.exe.config	98cf24d2820d87e587ce0073fb303066192dede2b2a3b319f9d15d7949a25eab.exe
File created	C:\Program Files (x86)\HD Audio\HD Audio.exe	98cf24d2820d87e587ce0073fb303066192dede2b2a3b319f9d15d7949a25eab.exe
File opened for modification	C:\Program Files (x86)\HD Audio\HD Audio.exe	98cf24d2820d87e587ce0073fb303066192dede2b2a3b319f9d15d7949a25eab.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

HD Audio.exeYourphone.exe

pid	process
1096	HD Audio.exe
1096	HD Audio.exe
1096	HD Audio.exe
2704	Yourphone.exe
2704	Yourphone.exe
2704	Yourphone.exe
1096	HD Audio.exe
2704	Yourphone.exe
1096	HD Audio.exe
2704	Yourphone.exe
1096	HD Audio.exe
2704	Yourphone.exe
1096	HD Audio.exe
2704	Yourphone.exe
1096	HD Audio.exe
2704	Yourphone.exe
1096	HD Audio.exe
2704	Yourphone.exe
1096	HD Audio.exe
2704	Yourphone.exe
1096	HD Audio.exe
2704	Yourphone.exe
1096	HD Audio.exe
2704	Yourphone.exe
1096	HD Audio.exe
2704	Yourphone.exe
1096	HD Audio.exe
2704	Yourphone.exe
1096	HD Audio.exe
2704	Yourphone.exe
1096	HD Audio.exe
2704	Yourphone.exe
1096	HD Audio.exe
2704	Yourphone.exe
1096	HD Audio.exe
2704	Yourphone.exe
1096	HD Audio.exe
2704	Yourphone.exe
1096	HD Audio.exe
2704	Yourphone.exe
1096	HD Audio.exe
2704	Yourphone.exe
1096	HD Audio.exe
2704	Yourphone.exe
1096	HD Audio.exe
2704	Yourphone.exe
1096	HD Audio.exe
2704	Yourphone.exe
1096	HD Audio.exe
2704	Yourphone.exe
1096	HD Audio.exe
2704	Yourphone.exe
1096	HD Audio.exe
2704	Yourphone.exe
1096	HD Audio.exe
2704	Yourphone.exe
1096	HD Audio.exe
2704	Yourphone.exe
1096	HD Audio.exe
2704	Yourphone.exe
1096	HD Audio.exe
2704	Yourphone.exe
1096	HD Audio.exe
2704	Yourphone.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

HD Audio.exeYourphone.exeYourphone.exe

description pid process

Token: SeDebugPrivilege 1096 HD Audio.exe
Token: SeDebugPrivilege 2352 Yourphone.exe
Token: SeDebugPrivilege 2704 Yourphone.exe
Suspicious use of FindShellTrayWindow 1 IoCs

Processes:

HD Audio.exe

pid process

1096 HD Audio.exe
Suspicious use of SendNotifyMessage 1 IoCs

Processes:

HD Audio.exe

pid process

1096 HD Audio.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

HD Audio.exe

pid process

1096 HD Audio.exe

description	pid	process
Token: SeDebugPrivilege	1096	HD Audio.exe
Token: SeDebugPrivilege	2352	Yourphone.exe
Token: SeDebugPrivilege	2704	Yourphone.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

98cf24d2820d87e587ce0073fb303066192dede2b2a3b319f9d15d7949a25eab.exeHD Audio.exeYourphone.exe

description	pid	process	target process
PID 3908 wrote to memory of 740	3908	98cf24d2820d87e587ce0073fb303066192dede2b2a3b319f9d15d7949a25eab.exe	WindowsInput.exe
PID 3908 wrote to memory of 740	3908	98cf24d2820d87e587ce0073fb303066192dede2b2a3b319f9d15d7949a25eab.exe	WindowsInput.exe
PID 3908 wrote to memory of 1096	3908	98cf24d2820d87e587ce0073fb303066192dede2b2a3b319f9d15d7949a25eab.exe	HD Audio.exe
PID 3908 wrote to memory of 1096	3908	98cf24d2820d87e587ce0073fb303066192dede2b2a3b319f9d15d7949a25eab.exe	HD Audio.exe
PID 3908 wrote to memory of 1096	3908	98cf24d2820d87e587ce0073fb303066192dede2b2a3b319f9d15d7949a25eab.exe	HD Audio.exe
PID 1096 wrote to memory of 2352	1096	HD Audio.exe	Yourphone.exe
PID 1096 wrote to memory of 2352	1096	HD Audio.exe	Yourphone.exe
PID 1096 wrote to memory of 2352	1096	HD Audio.exe	Yourphone.exe
PID 2352 wrote to memory of 2704	2352	Yourphone.exe	Yourphone.exe
PID 2352 wrote to memory of 2704	2352	Yourphone.exe	Yourphone.exe
PID 2352 wrote to memory of 2704	2352	Yourphone.exe	Yourphone.exe

C:\Users\Admin\AppData\Local\Temp\98cf24d2820d87e587ce0073fb303066192dede2b2a3b319f9d15d7949a25eab.exe
"C:\Users\Admin\AppData\Local\Temp\98cf24d2820d87e587ce0073fb303066192dede2b2a3b319f9d15d7949a25eab.exe"
1⤵
- Drops file in System32 directory
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:3908
- C:\Windows\SysWOW64\WindowsInput.exe
  "C:\Windows\SysWOW64\WindowsInput.exe" --install
  2⤵
  - Executes dropped EXE
  - Drops file in System32 directory
  PID:740
- C:\Program Files (x86)\HD Audio\HD Audio.exe
  "C:\Program Files (x86)\HD Audio\HD Audio.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1096
- - C:\Users\Admin\AppData\Roaming\Yourphone.exe
    "C:\Users\Admin\AppData\Roaming\Yourphone.exe" /launchSelfAndExit "C:\Program Files (x86)\HD Audio\HD Audio.exe" 1096 /protectFile
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:2352
  - - C:\Users\Admin\AppData\Roaming\Yourphone.exe
      "C:\Users\Admin\AppData\Roaming\Yourphone.exe" /watchProcess "C:\Program Files (x86)\HD Audio\HD Audio.exe" 1096 "/protectFile"
      4⤵
      Executes dropped EXE
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:2704

C:\Windows\SysWOW64\WindowsInput.exe
"C:\Windows\SysWOW64\WindowsInput.exe"
1⤵
- Executes dropped EXE
PID:2784

C:\Program Files (x86)\HD Audio\HD Audio.exe
"C:\Program Files (x86)\HD Audio\HD Audio.exe"
1⤵
- Executes dropped EXE
PID:3612

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Program Files (x86)\HD Audio\HD Audio.exe

MD5
fb71ff3ffdd50950d58e5d74f0cb4d36

SHA1
fd0882a725e4ade9b3d5a75a0f1cde65cfb16961

SHA256
98cf24d2820d87e587ce0073fb303066192dede2b2a3b319f9d15d7949a25eab

SHA512
fc594764ffc45d83907c2aaefb76290803f16c341501784e3d716825d613ec95e469da44954b1beac47d8c1d3ffc6f1bff8cbf21b3766a942a29c1611b44dfbf

Download Submit
C:\Program Files (x86)\HD Audio\HD Audio.exe

MD5
fb71ff3ffdd50950d58e5d74f0cb4d36

SHA1
fd0882a725e4ade9b3d5a75a0f1cde65cfb16961

SHA256
98cf24d2820d87e587ce0073fb303066192dede2b2a3b319f9d15d7949a25eab

SHA512
fc594764ffc45d83907c2aaefb76290803f16c341501784e3d716825d613ec95e469da44954b1beac47d8c1d3ffc6f1bff8cbf21b3766a942a29c1611b44dfbf

Download Submit
C:\Program Files (x86)\HD Audio\HD Audio.exe

MD5
fb71ff3ffdd50950d58e5d74f0cb4d36

SHA1
fd0882a725e4ade9b3d5a75a0f1cde65cfb16961

SHA256
98cf24d2820d87e587ce0073fb303066192dede2b2a3b319f9d15d7949a25eab

SHA512
fc594764ffc45d83907c2aaefb76290803f16c341501784e3d716825d613ec95e469da44954b1beac47d8c1d3ffc6f1bff8cbf21b3766a942a29c1611b44dfbf

Download Submit
C:\Program Files (x86)\HD Audio\HD Audio.exe.config

MD5
a2b76cea3a59fa9af5ea21ff68139c98

SHA1
35d76475e6a54c168f536e30206578babff58274

SHA256
f99ef5bf79a7c43701877f0bb0b890591885bb0a3d605762647cc8ffbf10c839

SHA512
b52608b45153c489419228864ecbcb92be24c644d470818dfe15f8c7e661a7bcd034ea13ef401f2b84ad5c29a41c9b4c7d161cc33ae3ef71659bc2bca1a8c4ad

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

MD5
605f809fab8c19729d39d075f7ffdb53

SHA1
c546f877c9bd53563174a90312a8337fdfc5fdd9

SHA256
6904d540649e76c55f99530b81be17e099184bb4cad415aa9b9b39cc3677f556

SHA512
82cc12c3186ae23884b8d5c104638c8206272c4389ade56b926dfc1d437b03888159b3c790b188b54d277a262e731927e703e680ea642e1417faee27443fd5b3

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

MD5
913967b216326e36a08010fb70f9dba3

SHA1
7b6f8c2eb5b443e03c212b85c2f0edb9c76ad2bf

SHA256
8d880758549220154d2ff4ee578f2b49527c5fb76a07d55237b61e30bcc09e3a

SHA512
c6fcb98d9fd509e9834fc3fba143bd36d41869cc104fbce5354951f0a6756156e34a30796baaa130dd45de3ed96e039ec14716716f6da4569915c7ef2d2b6c33

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

MD5
913967b216326e36a08010fb70f9dba3

SHA1
7b6f8c2eb5b443e03c212b85c2f0edb9c76ad2bf

SHA256
8d880758549220154d2ff4ee578f2b49527c5fb76a07d55237b61e30bcc09e3a

SHA512
c6fcb98d9fd509e9834fc3fba143bd36d41869cc104fbce5354951f0a6756156e34a30796baaa130dd45de3ed96e039ec14716716f6da4569915c7ef2d2b6c33

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

MD5
913967b216326e36a08010fb70f9dba3

SHA1
7b6f8c2eb5b443e03c212b85c2f0edb9c76ad2bf

SHA256
8d880758549220154d2ff4ee578f2b49527c5fb76a07d55237b61e30bcc09e3a

SHA512
c6fcb98d9fd509e9834fc3fba143bd36d41869cc104fbce5354951f0a6756156e34a30796baaa130dd45de3ed96e039ec14716716f6da4569915c7ef2d2b6c33

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

MD5
a2b76cea3a59fa9af5ea21ff68139c98

SHA1
35d76475e6a54c168f536e30206578babff58274

SHA256
f99ef5bf79a7c43701877f0bb0b890591885bb0a3d605762647cc8ffbf10c839

SHA512
b52608b45153c489419228864ecbcb92be24c644d470818dfe15f8c7e661a7bcd034ea13ef401f2b84ad5c29a41c9b4c7d161cc33ae3ef71659bc2bca1a8c4ad

Download Submit
C:\Windows\SysWOW64\WindowsInput.exe

MD5
e6fcf516d8ed8d0d4427f86e08d0d435

SHA1
c7691731583ab7890086635cb7f3e4c22ca5e409

SHA256
8dbe814359391ed6b0b5b182039008cf1d00964da9fbc4747f46242a95c24337

SHA512
c496cf8e2e222fe1e19051b291e6860f31aae39f54369c1c5e8c9758c4b56e8af904e3e536e743a0a6fdbbf8478afba4baee92e13fc1b3073376ac6bf4a7948e

Download Submit
C:\Windows\SysWOW64\WindowsInput.exe

MD5
e6fcf516d8ed8d0d4427f86e08d0d435

SHA1
c7691731583ab7890086635cb7f3e4c22ca5e409

SHA256
8dbe814359391ed6b0b5b182039008cf1d00964da9fbc4747f46242a95c24337

SHA512
c496cf8e2e222fe1e19051b291e6860f31aae39f54369c1c5e8c9758c4b56e8af904e3e536e743a0a6fdbbf8478afba4baee92e13fc1b3073376ac6bf4a7948e

Download Submit
C:\Windows\SysWOW64\WindowsInput.exe

MD5
e6fcf516d8ed8d0d4427f86e08d0d435

SHA1
c7691731583ab7890086635cb7f3e4c22ca5e409

SHA256
8dbe814359391ed6b0b5b182039008cf1d00964da9fbc4747f46242a95c24337

SHA512
c496cf8e2e222fe1e19051b291e6860f31aae39f54369c1c5e8c9758c4b56e8af904e3e536e743a0a6fdbbf8478afba4baee92e13fc1b3073376ac6bf4a7948e

Download Submit
C:\Windows\SysWOW64\WindowsInput.exe.config

MD5
a2b76cea3a59fa9af5ea21ff68139c98

SHA1
35d76475e6a54c168f536e30206578babff58274

SHA256
f99ef5bf79a7c43701877f0bb0b890591885bb0a3d605762647cc8ffbf10c839

SHA512
b52608b45153c489419228864ecbcb92be24c644d470818dfe15f8c7e661a7bcd034ea13ef401f2b84ad5c29a41c9b4c7d161cc33ae3ef71659bc2bca1a8c4ad

Download Submit
memory/740-130-0x0000000002D70000-0x0000000002D71000-memory.dmp

Filesize
4KB

Download
memory/740-131-0x000000001B6D0000-0x000000001B6D1000-memory.dmp

Filesize
4KB

Download
memory/740-132-0x000000001B740000-0x000000001B742000-memory.dmp

Filesize
8KB

Download
memory/740-127-0x0000000000C60000-0x0000000000C61000-memory.dmp

Filesize
4KB

Download
memory/740-123-0x0000000000000000-mapping.dmp

Download
memory/1096-172-0x0000000005513000-0x0000000005515000-memory.dmp

Filesize
8KB

Download
memory/1096-161-0x00000000063B0000-0x00000000063B1000-memory.dmp

Filesize
4KB

Download
memory/1096-170-0x0000000005510000-0x0000000005511000-memory.dmp

Filesize
4KB

Download
memory/1096-139-0x0000000000000000-mapping.dmp

Download
memory/1096-162-0x00000000061E0000-0x00000000061EC000-memory.dmp

Filesize
48KB

Download
memory/1096-151-0x0000000005960000-0x00000000059A8000-memory.dmp

Filesize
288KB

Download
memory/1096-163-0x00000000066A0000-0x00000000066A1000-memory.dmp

Filesize
4KB

Download
memory/1096-156-0x0000000006010000-0x0000000006025000-memory.dmp

Filesize
84KB

Download
memory/2352-168-0x0000000000C90000-0x0000000000C91000-memory.dmp

Filesize
4KB

Download
memory/2352-164-0x0000000000000000-mapping.dmp

Download
memory/2704-173-0x0000000000000000-mapping.dmp

Download
memory/2784-143-0x0000000019DF0000-0x0000000019DF2000-memory.dmp

Filesize
8KB

Download
memory/2784-138-0x000000001A310000-0x000000001A311000-memory.dmp

Filesize
4KB

Download
memory/3612-171-0x00000000057B0000-0x00000000057B1000-memory.dmp

Filesize
4KB

Download
memory/3908-114-0x00000000005C0000-0x00000000005C1000-memory.dmp

Filesize
4KB

Download
memory/3908-117-0x0000000004F80000-0x0000000004FDA000-memory.dmp

Filesize
360KB

Download
memory/3908-121-0x00000000054C0000-0x00000000054C1000-memory.dmp

Filesize
4KB

Download
memory/3908-118-0x0000000005500000-0x0000000005501000-memory.dmp

Filesize
4KB

Download
memory/3908-119-0x00000000050A0000-0x00000000050A1000-memory.dmp

Filesize
4KB

Download
memory/3908-120-0x0000000005480000-0x0000000005490000-memory.dmp

Filesize
64KB

Download
memory/3908-122-0x0000000004F70000-0x0000000004F71000-memory.dmp

Filesize
4KB

Download
memory/3908-116-0x00000000010A0000-0x00000000010AC000-memory.dmp

Filesize
48KB

Download