asyncrat | 7bbecd7cba99f380ba075665383acb5e36a4160e953a83dc01444580c3dd9771

General

Target
7bbecd7cba99f380ba075665383acb5e36a4160e953a83dc01444580c3dd9771.exe
Size 45KB
Sample260817-tbh4csvsct
SHA256 7bbecd7cba99f380ba075665383acb5e36a4160e953a83dc01444580c3dd9771
MD5 d0a064d3d0e81f1948e31d562d6e2138
SHA1 68af96099b51d8bd33849131ec0a6403ee099000
SHA512 c1f4f707c87aad3f57ef514292bd62e9932e70be29e90a55758989f160d2a368b30854fcf177082ecc38d2f6926367f7d7c85daf5f19f29d38fab55c1fb75f9c
SSDEEP 768:cu7m/5THrq+CWUoDuMmo2qFg3FoDEaOPI7zjblgX3izluXqnoM+ageBDZUx:cu7e5TH2A2RKEa373biXSZ2qoMzgwdUx
TLSH
T1CB232B003BE8822BF2BE4F78ADF26145867AF6633603D5491CC451DB5713BC69A42AFD
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

default command_and_control defense_evasion discovery execution asyncrat persistence rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Default

C2

ads.zorvec.name:80
ads.zorvec.name:22
ads.zorvec.name:8080
ads.zorvec.name:8880
ads.zorvec.name:2052
ads.zorvec.name:2082
ads.zorvec.name:2086
ads.zorvec.name:2095
ads.zorvec.name:443
ads.zorvec.name:2053
ads.zorvec.name:2083
ads.zorvec.name:2087
ads.zorvec.name:2096
ads.zorvec.name:8443
www.ads.zorvec.name:80
www.ads.zorvec.name:22
www.ads.zorvec.name:8080
www.ads.zorvec.name:8880
www.ads.zorvec.name:2052
www.ads.zorvec.name:2082
www.ads.zorvec.name:2086
www.ads.zorvec.name:2095
www.ads.zorvec.name:443
www.ads.zorvec.name:2053
www.ads.zorvec.name:2083
www.ads.zorvec.name:2087
www.ads.zorvec.name:2096
www.ads.zorvec.name:8443
agenttesla.ads.zorvec.name:80
agenttesla.ads.zorvec.name:22
agenttesla.ads.zorvec.name:8080
agenttesla.ads.zorvec.name:8880
agenttesla.ads.zorvec.name:2052
agenttesla.ads.zorvec.name:2082
agenttesla.ads.zorvec.name:2086
agenttesla.ads.zorvec.name:2095
agenttesla.ads.zorvec.name:443
agenttesla.ads.zorvec.name:2053
agenttesla.ads.zorvec.name:2083
agenttesla.ads.zorvec.name:2087
agenttesla.ads.zorvec.name:2096
agenttesla.ads.zorvec.name:8443
sodinokibi.ads.zorvec.name:80
sodinokibi.ads.zorvec.name:22
sodinokibi.ads.zorvec.name:8080
sodinokibi.ads.zorvec.name:8880
sodinokibi.ads.zorvec.name:2052
sodinokibi.ads.zorvec.name:2082
sodinokibi.ads.zorvec.name:2086
sodinokibi.ads.zorvec.name:2095
sodinokibi.ads.zorvec.name:443
sodinokibi.ads.zorvec.name:2053
sodinokibi.ads.zorvec.name:2083
sodinokibi.ads.zorvec.name:2087
sodinokibi.ads.zorvec.name:2096
sodinokibi.ads.zorvec.name:8443

Mutex

lRHW3lVYRLrM

Attributes

delay
0
install
true
install_file
onmu2.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 2 IoCs

rat

resource	yara_rule
behavioral1/files/0x00080000000243e9-8.dat	family_asyncrat
behavioral1/memory/2324-10-0x00000000054B0000-0x00000000054C0000-memory.dmp	family_asyncrat

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-1-5-21-204488895-2999877624-296153668-1000\Control Panel\International\Geo\Nation	7bbecd7cba99f380ba075665383acb5e36a4160e953a83dc01444580c3dd9771.exe

Executes dropped EXE 2 IoCs

pid	Process
2324	onmu2.exe
2980	onmu2.exe

Outbound SSH connection to public host 2 TTPs 2 IoCs

SSH is used for remote access. This may indicate SSH host discovery, encrypted C2 traffic, or data exfiltration.

command_and_control

Protocol Tunneling

T1572

Network Service Discovery

T1046

description	flow	ioc	pid	Process
SSH destination	5	104.21.28.44:22	2324	onmu2.exe
SSH destination	8	172.67.144.58:22	2324	onmu2.exe

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

System Information Discovery
T1082

Executes a command shell one-liner 1 TTPs 2 IoCs

Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

execution

Windows Command Shell

T1059.003

pid	Process
2608	cmd.exe
4064	cmd.exe

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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	onmu2.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	onmu2.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	7bbecd7cba99f380ba075665383acb5e36a4160e953a83dc01444580c3dd9771.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
2200	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
2972	schtasks.exe

Suspicious behavior: EnumeratesProcesses 23 IoCs

pid	Process
4600	7bbecd7cba99f380ba075665383acb5e36a4160e953a83dc01444580c3dd9771.exe
4600	7bbecd7cba99f380ba075665383acb5e36a4160e953a83dc01444580c3dd9771.exe
4600	7bbecd7cba99f380ba075665383acb5e36a4160e953a83dc01444580c3dd9771.exe
4600	7bbecd7cba99f380ba075665383acb5e36a4160e953a83dc01444580c3dd9771.exe
4600	7bbecd7cba99f380ba075665383acb5e36a4160e953a83dc01444580c3dd9771.exe
4600	7bbecd7cba99f380ba075665383acb5e36a4160e953a83dc01444580c3dd9771.exe
4600	7bbecd7cba99f380ba075665383acb5e36a4160e953a83dc01444580c3dd9771.exe
4600	7bbecd7cba99f380ba075665383acb5e36a4160e953a83dc01444580c3dd9771.exe
4600	7bbecd7cba99f380ba075665383acb5e36a4160e953a83dc01444580c3dd9771.exe
4600	7bbecd7cba99f380ba075665383acb5e36a4160e953a83dc01444580c3dd9771.exe
4600	7bbecd7cba99f380ba075665383acb5e36a4160e953a83dc01444580c3dd9771.exe
4600	7bbecd7cba99f380ba075665383acb5e36a4160e953a83dc01444580c3dd9771.exe
4600	7bbecd7cba99f380ba075665383acb5e36a4160e953a83dc01444580c3dd9771.exe
4600	7bbecd7cba99f380ba075665383acb5e36a4160e953a83dc01444580c3dd9771.exe
4600	7bbecd7cba99f380ba075665383acb5e36a4160e953a83dc01444580c3dd9771.exe
4600	7bbecd7cba99f380ba075665383acb5e36a4160e953a83dc01444580c3dd9771.exe
4600	7bbecd7cba99f380ba075665383acb5e36a4160e953a83dc01444580c3dd9771.exe
4600	7bbecd7cba99f380ba075665383acb5e36a4160e953a83dc01444580c3dd9771.exe
4600	7bbecd7cba99f380ba075665383acb5e36a4160e953a83dc01444580c3dd9771.exe
4600	7bbecd7cba99f380ba075665383acb5e36a4160e953a83dc01444580c3dd9771.exe
4600	7bbecd7cba99f380ba075665383acb5e36a4160e953a83dc01444580c3dd9771.exe
4600	7bbecd7cba99f380ba075665383acb5e36a4160e953a83dc01444580c3dd9771.exe
4600	7bbecd7cba99f380ba075665383acb5e36a4160e953a83dc01444580c3dd9771.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4600	7bbecd7cba99f380ba075665383acb5e36a4160e953a83dc01444580c3dd9771.exe
Token: SeDebugPrivilege	2324	onmu2.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 4600 wrote to memory of 2608	4600	7bbecd7cba99f380ba075665383acb5e36a4160e953a83dc01444580c3dd9771.exe	86
PID 4600 wrote to memory of 4064	4600	7bbecd7cba99f380ba075665383acb5e36a4160e953a83dc01444580c3dd9771.exe	88
PID 4064 wrote to memory of 2200	4064	cmd.exe	90
PID 2608 wrote to memory of 2972	2608	cmd.exe	91
PID 4064 wrote to memory of 2980	4064	cmd.exe	95

C:\Users\Admin\AppData\Local\Temp\7bbecd7cba99f380ba075665383acb5e36a4160e953a83dc01444580c3dd9771.exe
"C:\Users\Admin\AppData\Local\Temp\7bbecd7cba99f380ba075665383acb5e36a4160e953a83dc01444580c3dd9771.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4600
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "onmu2" /tr '"C:\Users\Admin\AppData\Roaming\onmu2.exe"' & exit
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2608
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "onmu2" /tr '"C:\Users\Admin\AppData\Roaming\onmu2.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2972
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp673.tmp.bat""
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4064
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:2200
- - C:\Users\Admin\AppData\Roaming\onmu2.exe
    "C:\Users\Admin\AppData\Roaming\onmu2.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:2980

C:\Users\Admin\AppData\Roaming\onmu2.exe
"C:\Users\Admin\AppData\Roaming\onmu2.exe"
1⤵
- Executes dropped EXE
- Outbound SSH connection to public host
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:2324

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

Windows Command Shell

1

T1059.003

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

Network Service Discovery

Query Registry

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Protocol Tunneling

1

T1572

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

tmp673.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmp673.tmp.bat
Size 148B
SHA256 b234a76925233ded11a283fe3526309c790ce9634fa553bab8bb3c7806c78a58
MD5 4efc67204cdef99356f28ad87f34c7a3
SHA1 0feec76d44057173153913910fbb022450fb2726
SHA512 096ce341601744f4c0eae427176e3e22e9834649ec606d1fed2612d4f661d89d558a711428cd91dc346dda6b97f54d6bd59a658f033368a878a33c82e6a99a90
TLSH
T10FC02B4291C9EE4E7815145703FBD68C9172AC593F40BB00CB44444DA280458F0DB341
MD5 SHA1 SHA512 TLSH

Submit Download

onmu2.exe

Path C:\Users\Admin\AppData\Roaming\onmu2.exe
Size 45KB
SHA256 7bbecd7cba99f380ba075665383acb5e36a4160e953a83dc01444580c3dd9771
MD5 d0a064d3d0e81f1948e31d562d6e2138
SHA1 68af96099b51d8bd33849131ec0a6403ee099000
SHA512 c1f4f707c87aad3f57ef514292bd62e9932e70be29e90a55758989f160d2a368b30854fcf177082ecc38d2f6926367f7d7c85daf5f19f29d38fab55c1fb75f9c
SSDEEP 768:cu7m/5THrq+CWUoDuMmo2qFg3FoDEaOPI7zjblgX3izluXqnoM+ageBDZUx:cu7e5TH2A2RKEa373biXSZ2qoMzgwdUx
TLSH
T1CB232B003BE8822BF2BE4F78ADF26145867AF6633603D5491CC451DB5713BC69A42AFD
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/2324-10-0x00000000054B0000-0x00000000054C0000-memory.dmp

Download

memory/2324-13-0x00000000054B0000-0x00000000054C0000-memory.dmp

Download

memory/4600-0-0x0000000000D10000-0x0000000000D22000-memory.dmp

Download

memory/4600-1-0x00000000056D0000-0x00000000056E0000-memory.dmp

Download

memory/4600-2-0x00000000056E0000-0x000000000577C000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

Replay Monitor

Loading Replay Monitor...

Downloads