asyncrat | 55e3f600b0f6486d5dc562a0bc24aa267f357652a5c72aad35788c5cfee3691a

General

Target
55e3f600b0f6486d5dc562a0bc24aa267f357652a5c72aad35788c5cfee3691a.exe
Size 45KB
Sample260531-le7bcsdx7x
SHA256 55e3f600b0f6486d5dc562a0bc24aa267f357652a5c72aad35788c5cfee3691a
MD5 e11aa1f67280a288d890459b1fff51bc
SHA1 4c3444745e7151461d0208daea189bbc4bfa6f28
SHA512 7906b38a1ed94285a2dce98f290858dd21d89d64aad11f9c8d4caf6b07a87c409596fcf3186ab4b46330bc8b8f61e5ad8d5a704d52c9e59521f89f4bb1296f34
SSDEEP 768:huksVT6iYfx3WULPSVmo2qDu/cYssPJZOPIcvzjbDgXIipEWr/DNjIBDZDx:huksVThE22LMIf3cv3bcXFpEW/hudDx
TLSH
T177231C003BE9813BF2BE4F7898F26145867AF2673603D59E1CC451DB5613FC68A426EE
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

default defense_evasion discovery execution asyncrat persistence rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Default

C2

vlxvn.vip:443
vlxvn.vip:80
vlxvn.vip:7797
vlxvn.vip:8707
vlxvn.vip:6620
www.vlxvn.vip:443
www.vlxvn.vip:80
www.vlxvn.vip:7797
www.vlxvn.vip:8707
www.vlxvn.vip:6620
ryuk.vlxvn.vip:443
ryuk.vlxvn.vip:80
ryuk.vlxvn.vip:7797
ryuk.vlxvn.vip:8707
ryuk.vlxvn.vip:6620
conti.vlxvn.vip:443
conti.vlxvn.vip:80
conti.vlxvn.vip:7797
conti.vlxvn.vip:8707
conti.vlxvn.vip:6620

Mutex

2I3VlJq7bPD6

Attributes

delay
0
install
true
install_file
ogprzq.exe
install_folder
%AppData%

aes.plain

Signatures

Family: AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
rat asyncrat

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral2/files/0x000400000000df6d-8.dat	family_asyncrat

Executes dropped EXE 2 IoCs

pid	Process
3524	ogprzq.exe
5276	ogprzq.exe

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 7 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	ogprzq.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	55e3f600b0f6486d5dc562a0bc24aa267f357652a5c72aad35788c5cfee3691a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ogprzq.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
5096	timeout.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
3252	schtasks.exe

Suspicious behavior: EnumeratesProcesses 19 IoCs

pid	Process
3088	55e3f600b0f6486d5dc562a0bc24aa267f357652a5c72aad35788c5cfee3691a.exe
3088	55e3f600b0f6486d5dc562a0bc24aa267f357652a5c72aad35788c5cfee3691a.exe
3088	55e3f600b0f6486d5dc562a0bc24aa267f357652a5c72aad35788c5cfee3691a.exe
3088	55e3f600b0f6486d5dc562a0bc24aa267f357652a5c72aad35788c5cfee3691a.exe
3088	55e3f600b0f6486d5dc562a0bc24aa267f357652a5c72aad35788c5cfee3691a.exe
3088	55e3f600b0f6486d5dc562a0bc24aa267f357652a5c72aad35788c5cfee3691a.exe
3088	55e3f600b0f6486d5dc562a0bc24aa267f357652a5c72aad35788c5cfee3691a.exe
3088	55e3f600b0f6486d5dc562a0bc24aa267f357652a5c72aad35788c5cfee3691a.exe
3088	55e3f600b0f6486d5dc562a0bc24aa267f357652a5c72aad35788c5cfee3691a.exe
3088	55e3f600b0f6486d5dc562a0bc24aa267f357652a5c72aad35788c5cfee3691a.exe
3088	55e3f600b0f6486d5dc562a0bc24aa267f357652a5c72aad35788c5cfee3691a.exe
3088	55e3f600b0f6486d5dc562a0bc24aa267f357652a5c72aad35788c5cfee3691a.exe
3088	55e3f600b0f6486d5dc562a0bc24aa267f357652a5c72aad35788c5cfee3691a.exe
3088	55e3f600b0f6486d5dc562a0bc24aa267f357652a5c72aad35788c5cfee3691a.exe
3088	55e3f600b0f6486d5dc562a0bc24aa267f357652a5c72aad35788c5cfee3691a.exe
3088	55e3f600b0f6486d5dc562a0bc24aa267f357652a5c72aad35788c5cfee3691a.exe
3088	55e3f600b0f6486d5dc562a0bc24aa267f357652a5c72aad35788c5cfee3691a.exe
3088	55e3f600b0f6486d5dc562a0bc24aa267f357652a5c72aad35788c5cfee3691a.exe
3088	55e3f600b0f6486d5dc562a0bc24aa267f357652a5c72aad35788c5cfee3691a.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3088	55e3f600b0f6486d5dc562a0bc24aa267f357652a5c72aad35788c5cfee3691a.exe
Token: SeDebugPrivilege	3524	ogprzq.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 3088 wrote to memory of 3572	3088	55e3f600b0f6486d5dc562a0bc24aa267f357652a5c72aad35788c5cfee3691a.exe	80
PID 3088 wrote to memory of 5632	3088	55e3f600b0f6486d5dc562a0bc24aa267f357652a5c72aad35788c5cfee3691a.exe	82
PID 3572 wrote to memory of 3252	3572	cmd.exe	84
PID 5632 wrote to memory of 5096	5632	cmd.exe	85
PID 5632 wrote to memory of 5276	5632	cmd.exe	88

C:\Users\Admin\AppData\Local\Temp\55e3f600b0f6486d5dc562a0bc24aa267f357652a5c72aad35788c5cfee3691a.exe
"C:\Users\Admin\AppData\Local\Temp\55e3f600b0f6486d5dc562a0bc24aa267f357652a5c72aad35788c5cfee3691a.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3088
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "ogprzq" /tr '"C:\Users\Admin\AppData\Roaming\ogprzq.exe"' & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3572
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "ogprzq" /tr '"C:\Users\Admin\AppData\Roaming\ogprzq.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:3252
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpCAD.tmp.bat""
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:5632
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:5096
- - C:\Users\Admin\AppData\Roaming\ogprzq.exe
    "C:\Users\Admin\AppData\Roaming\ogprzq.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:5276

C:\Users\Admin\AppData\Roaming\ogprzq.exe
"C:\Users\Admin\AppData\Roaming\ogprzq.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:3524

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

tmpCAD.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmpCAD.tmp.bat
Size 149B
SHA256 18dcbadf6e257ac04fb79bb5321e4bb9c9b84b0423c046c67df277500cba7bbb
MD5 1c1211287a2dce0b1df367047d2293e3
SHA1 e0e0fddbf579ea9b386012a97b7086f5cc589cfc
SHA512 dd763d8af7449f5fbe77dcd444ec1463326826ddbc250b7e9c8dc0a187f1428357718e48a98d18f174803fa0a5917eae6ef5d450c94b37793cc9467eb5f2b0ee
TLSH
T15BC02B8291C5FA4E3906541302FBD48C91736C19BF44BB00CB08401D5AC0459F0ED341
MD5 SHA1 SHA512 TLSH

Submit Download

ogprzq.exe

Path C:\Users\Admin\AppData\Roaming\ogprzq.exe
Size 45KB
SHA256 55e3f600b0f6486d5dc562a0bc24aa267f357652a5c72aad35788c5cfee3691a
MD5 e11aa1f67280a288d890459b1fff51bc
SHA1 4c3444745e7151461d0208daea189bbc4bfa6f28
SHA512 7906b38a1ed94285a2dce98f290858dd21d89d64aad11f9c8d4caf6b07a87c409596fcf3186ab4b46330bc8b8f61e5ad8d5a704d52c9e59521f89f4bb1296f34
SSDEEP 768:huksVT6iYfx3WULPSVmo2qDu/cYssPJZOPIcvzjbDgXIipEWr/DNjIBDZDx:huksVThE22LMIf3cv3bcXFpEW/hudDx
TLSH
T177231C003BE9813BF2BE4F7898F26145867AF2673603D59E1CC451DB5613FC68A426EE
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/3088-0-0x0000000000A40000-0x0000000000A52000-memory.dmp

Download

memory/3088-1-0x0000000005500000-0x0000000005510000-memory.dmp

Download

memory/3088-2-0x0000000005510000-0x00000000055AC000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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Downloads