arrowrat | 8a572189d449be581188db033f77172d4f84649cdddaa81e8f00390e8e71a987

Analysis

max time kernel
145s
max time network
151s
platform
windows7_x64
resource
win7-20230220-en
resource tags

arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
submitted
04-05-2023 12:31

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General

Target

arrow/a1923ce6f95ba7e57b9d8ea27c1867283cacbc992a0f9e16ec9dd864930d9d71.exe
Size

2.2MB
MD5

286de0123129cb1bdb0533301f435746
SHA1

28887e5a7c28661db7b3d4da3612bafd05604813
SHA256

a1923ce6f95ba7e57b9d8ea27c1867283cacbc992a0f9e16ec9dd864930d9d71
SHA512

07da8387eeffada23d39eed1390972e37031ea72a2f8a046027ac160f8ecef81ba3011698dac5fafc5114fe688796b1bc7c4df8a283dc1e23f76f0a2faf0b0bc
SSDEEP

49152:IhgaZCojYG3CmQYbfHxDJ6aiyc7jntoe:IhggwdY7d0tV

Score

10^/10

arrowrat client persistence rat

Malware Config

Extracted

Family

arrowrat

Botnet

Client

185.246.221.202:17168

Mutex

WcOErhAdu

Signatures

ArrowRat
Remote access tool with various capabilities first seen in late 2021.
rat arrowrat

Modifies Installed Components in the registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000\Software\Microsoft\Active Setup\Installed Components	explorer.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000\Software\Microsoft\Windows\CurrentVersion\Run\update = "\"C:\\Users\\Admin\\AppData\\Roaming\\Acrobat\\update.exe\""	a1923ce6f95ba7e57b9d8ea27c1867283cacbc992a0f9e16ec9dd864930d9d71.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1712 set thread context of 852	1712	a1923ce6f95ba7e57b9d8ea27c1867283cacbc992a0f9e16ec9dd864930d9d71.exe	30
PID 852 set thread context of 1172	852	a1923ce6f95ba7e57b9d8ea27c1867283cacbc992a0f9e16ec9dd864930d9d71.exe	32

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

System Information Discovery
T1082

Modifies registry class 5 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = ffffffff	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000_Classes\Local Settings	explorer.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1456	powershell.exe
852	a1923ce6f95ba7e57b9d8ea27c1867283cacbc992a0f9e16ec9dd864930d9d71.exe
852	a1923ce6f95ba7e57b9d8ea27c1867283cacbc992a0f9e16ec9dd864930d9d71.exe

Suspicious use of AdjustPrivilegeToken 9 IoCs

description	pid	Process
Token: SeDebugPrivilege	1712	a1923ce6f95ba7e57b9d8ea27c1867283cacbc992a0f9e16ec9dd864930d9d71.exe
Token: SeDebugPrivilege	1456	powershell.exe
Token: SeDebugPrivilege	852	a1923ce6f95ba7e57b9d8ea27c1867283cacbc992a0f9e16ec9dd864930d9d71.exe
Token: SeShutdownPrivilege	580	explorer.exe
Token: SeShutdownPrivilege	580	explorer.exe
Token: SeShutdownPrivilege	580	explorer.exe
Token: SeShutdownPrivilege	580	explorer.exe
Token: SeShutdownPrivilege	580	explorer.exe
Token: SeShutdownPrivilege	580	explorer.exe

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
580	explorer.exe
580	explorer.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
852	a1923ce6f95ba7e57b9d8ea27c1867283cacbc992a0f9e16ec9dd864930d9d71.exe

Suspicious use of WriteProcessMemory 29 IoCs

description	pid	Process	procid_target
PID 1712 wrote to memory of 1456	1712	a1923ce6f95ba7e57b9d8ea27c1867283cacbc992a0f9e16ec9dd864930d9d71.exe	28
PID 1712 wrote to memory of 1456	1712	a1923ce6f95ba7e57b9d8ea27c1867283cacbc992a0f9e16ec9dd864930d9d71.exe	28
PID 1712 wrote to memory of 1456	1712	a1923ce6f95ba7e57b9d8ea27c1867283cacbc992a0f9e16ec9dd864930d9d71.exe	28
PID 1712 wrote to memory of 1456	1712	a1923ce6f95ba7e57b9d8ea27c1867283cacbc992a0f9e16ec9dd864930d9d71.exe	28
PID 1712 wrote to memory of 852	1712	a1923ce6f95ba7e57b9d8ea27c1867283cacbc992a0f9e16ec9dd864930d9d71.exe	30
PID 1712 wrote to memory of 852	1712	a1923ce6f95ba7e57b9d8ea27c1867283cacbc992a0f9e16ec9dd864930d9d71.exe	30
PID 1712 wrote to memory of 852	1712	a1923ce6f95ba7e57b9d8ea27c1867283cacbc992a0f9e16ec9dd864930d9d71.exe	30
PID 1712 wrote to memory of 852	1712	a1923ce6f95ba7e57b9d8ea27c1867283cacbc992a0f9e16ec9dd864930d9d71.exe	30
PID 1712 wrote to memory of 852	1712	a1923ce6f95ba7e57b9d8ea27c1867283cacbc992a0f9e16ec9dd864930d9d71.exe	30
PID 1712 wrote to memory of 852	1712	a1923ce6f95ba7e57b9d8ea27c1867283cacbc992a0f9e16ec9dd864930d9d71.exe	30
PID 1712 wrote to memory of 852	1712	a1923ce6f95ba7e57b9d8ea27c1867283cacbc992a0f9e16ec9dd864930d9d71.exe	30
PID 1712 wrote to memory of 852	1712	a1923ce6f95ba7e57b9d8ea27c1867283cacbc992a0f9e16ec9dd864930d9d71.exe	30
PID 1712 wrote to memory of 852	1712	a1923ce6f95ba7e57b9d8ea27c1867283cacbc992a0f9e16ec9dd864930d9d71.exe	30
PID 852 wrote to memory of 580	852	a1923ce6f95ba7e57b9d8ea27c1867283cacbc992a0f9e16ec9dd864930d9d71.exe	31
PID 852 wrote to memory of 580	852	a1923ce6f95ba7e57b9d8ea27c1867283cacbc992a0f9e16ec9dd864930d9d71.exe	31
PID 852 wrote to memory of 580	852	a1923ce6f95ba7e57b9d8ea27c1867283cacbc992a0f9e16ec9dd864930d9d71.exe	31
PID 852 wrote to memory of 580	852	a1923ce6f95ba7e57b9d8ea27c1867283cacbc992a0f9e16ec9dd864930d9d71.exe	31
PID 852 wrote to memory of 1172	852	a1923ce6f95ba7e57b9d8ea27c1867283cacbc992a0f9e16ec9dd864930d9d71.exe	32
PID 852 wrote to memory of 1172	852	a1923ce6f95ba7e57b9d8ea27c1867283cacbc992a0f9e16ec9dd864930d9d71.exe	32
PID 852 wrote to memory of 1172	852	a1923ce6f95ba7e57b9d8ea27c1867283cacbc992a0f9e16ec9dd864930d9d71.exe	32
PID 852 wrote to memory of 1172	852	a1923ce6f95ba7e57b9d8ea27c1867283cacbc992a0f9e16ec9dd864930d9d71.exe	32
PID 852 wrote to memory of 1172	852	a1923ce6f95ba7e57b9d8ea27c1867283cacbc992a0f9e16ec9dd864930d9d71.exe	32
PID 852 wrote to memory of 1172	852	a1923ce6f95ba7e57b9d8ea27c1867283cacbc992a0f9e16ec9dd864930d9d71.exe	32
PID 852 wrote to memory of 1172	852	a1923ce6f95ba7e57b9d8ea27c1867283cacbc992a0f9e16ec9dd864930d9d71.exe	32
PID 852 wrote to memory of 1172	852	a1923ce6f95ba7e57b9d8ea27c1867283cacbc992a0f9e16ec9dd864930d9d71.exe	32
PID 852 wrote to memory of 1172	852	a1923ce6f95ba7e57b9d8ea27c1867283cacbc992a0f9e16ec9dd864930d9d71.exe	32
PID 580 wrote to memory of 1632	580	explorer.exe	34
PID 580 wrote to memory of 1632	580	explorer.exe	34
PID 580 wrote to memory of 1632	580	explorer.exe	34

C:\Users\Admin\AppData\Local\Temp\arrow\a1923ce6f95ba7e57b9d8ea27c1867283cacbc992a0f9e16ec9dd864930d9d71.exe
"C:\Users\Admin\AppData\Local\Temp\arrow\a1923ce6f95ba7e57b9d8ea27c1867283cacbc992a0f9e16ec9dd864930d9d71.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1712
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ENC UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBTAGUAYwBvAG4AZABzACAAMwAxAA==
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1456
- C:\Users\Admin\AppData\Local\Temp\arrow\a1923ce6f95ba7e57b9d8ea27c1867283cacbc992a0f9e16ec9dd864930d9d71.exe
  C:\Users\Admin\AppData\Local\Temp\arrow\a1923ce6f95ba7e57b9d8ea27c1867283cacbc992a0f9e16ec9dd864930d9d71.exe
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:852
- - C:\Windows\explorer.exe
    "C:\Windows\explorer.exe"
    3⤵
    - Modifies Installed Components in the registry
    - Modifies registry class
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of FindShellTrayWindow
    - Suspicious use of WriteProcessMemory
    PID:580
  - - C:\Windows\system32\ctfmon.exe
      ctfmon.exe
      4⤵
      PID:1632
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" Client 185.246.221.202 17168 WcOErhAdu
    3⤵
    PID:1172

C:\Windows\system32\AUDIODG.EXE
C:\Windows\system32\AUDIODG.EXE 0x55c
1⤵
PID:1948

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

Replay Monitor

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Downloads

memory/852-9308-0x0000000004A90000-0x0000000004AD0000-memory.dmp

Filesize
256KB

Download
memory/852-9292-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1172-9309-0x0000000004800000-0x0000000004840000-memory.dmp

Filesize
256KB

Download
memory/1172-9303-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download
memory/1456-9276-0x0000000000290000-0x00000000002D0000-memory.dmp

Filesize
256KB

Download
memory/1456-9279-0x0000000000290000-0x00000000002D0000-memory.dmp

Filesize
256KB

Download
memory/1456-9278-0x0000000000290000-0x00000000002D0000-memory.dmp

Filesize
256KB

Download
memory/1456-9275-0x0000000000290000-0x00000000002D0000-memory.dmp

Filesize
256KB

Download
memory/1712-95-0x0000000004AE0000-0x0000000004D08000-memory.dmp

Filesize
2.2MB

Download
memory/1712-105-0x0000000004AE0000-0x0000000004D08000-memory.dmp

Filesize
2.2MB

Download
memory/1712-71-0x0000000004AE0000-0x0000000004D08000-memory.dmp

Filesize
2.2MB

Download
memory/1712-73-0x0000000004AE0000-0x0000000004D08000-memory.dmp

Filesize
2.2MB

Download
memory/1712-75-0x0000000004AE0000-0x0000000004D08000-memory.dmp

Filesize
2.2MB

Download
memory/1712-77-0x0000000004AE0000-0x0000000004D08000-memory.dmp

Filesize
2.2MB

Download
memory/1712-79-0x0000000004AE0000-0x0000000004D08000-memory.dmp

Filesize
2.2MB

Download
memory/1712-81-0x0000000004AE0000-0x0000000004D08000-memory.dmp

Filesize
2.2MB

Download
memory/1712-83-0x0000000004AE0000-0x0000000004D08000-memory.dmp

Filesize
2.2MB

Download
memory/1712-85-0x0000000004AE0000-0x0000000004D08000-memory.dmp

Filesize
2.2MB

Download
memory/1712-87-0x0000000004AE0000-0x0000000004D08000-memory.dmp

Filesize
2.2MB

Download
memory/1712-89-0x0000000004AE0000-0x0000000004D08000-memory.dmp

Filesize
2.2MB

Download
memory/1712-91-0x0000000004AE0000-0x0000000004D08000-memory.dmp

Filesize
2.2MB

Download
memory/1712-93-0x0000000004AE0000-0x0000000004D08000-memory.dmp

Filesize
2.2MB

Download
memory/1712-54-0x0000000000DD0000-0x0000000001008000-memory.dmp

Filesize
2.2MB

Download
memory/1712-97-0x0000000004AE0000-0x0000000004D08000-memory.dmp

Filesize
2.2MB

Download
memory/1712-99-0x0000000004AE0000-0x0000000004D08000-memory.dmp

Filesize
2.2MB

Download
memory/1712-101-0x0000000004AE0000-0x0000000004D08000-memory.dmp

Filesize
2.2MB

Download
memory/1712-103-0x0000000004AE0000-0x0000000004D08000-memory.dmp

Filesize
2.2MB

Download
memory/1712-69-0x0000000004AE0000-0x0000000004D08000-memory.dmp

Filesize
2.2MB

Download
memory/1712-107-0x0000000004AE0000-0x0000000004D08000-memory.dmp

Filesize
2.2MB

Download
memory/1712-109-0x0000000004AE0000-0x0000000004D08000-memory.dmp

Filesize
2.2MB

Download
memory/1712-111-0x0000000004AE0000-0x0000000004D08000-memory.dmp

Filesize
2.2MB

Download
memory/1712-113-0x0000000004AE0000-0x0000000004D08000-memory.dmp

Filesize
2.2MB

Download
memory/1712-115-0x0000000004AE0000-0x0000000004D08000-memory.dmp

Filesize
2.2MB

Download
memory/1712-117-0x0000000004AE0000-0x0000000004D08000-memory.dmp

Filesize
2.2MB

Download
memory/1712-119-0x0000000004AE0000-0x0000000004D08000-memory.dmp

Filesize
2.2MB

Download
memory/1712-9272-0x0000000004530000-0x0000000004570000-memory.dmp

Filesize
256KB

Download
memory/1712-67-0x0000000004AE0000-0x0000000004D08000-memory.dmp

Filesize
2.2MB

Download
memory/1712-65-0x0000000004AE0000-0x0000000004D08000-memory.dmp

Filesize
2.2MB

Download
memory/1712-9277-0x0000000004530000-0x0000000004570000-memory.dmp

Filesize
256KB

Download
memory/1712-63-0x0000000004AE0000-0x0000000004D08000-memory.dmp

Filesize
2.2MB

Download
memory/1712-61-0x0000000004AE0000-0x0000000004D08000-memory.dmp

Filesize
2.2MB

Download
memory/1712-59-0x0000000004AE0000-0x0000000004D08000-memory.dmp

Filesize
2.2MB

Download
memory/1712-57-0x0000000004AE0000-0x0000000004D08000-memory.dmp

Filesize
2.2MB

Download
memory/1712-56-0x0000000004AE0000-0x0000000004D08000-memory.dmp

Filesize
2.2MB

Download
memory/1712-55-0x0000000004AE0000-0x0000000004D0E000-memory.dmp

Filesize
2.2MB

Download