asyncrat | 7b73c846f601c631ae793a66a2e3561e270f53e2310897e5baaf8f62dca99f3d

General

Target
7b73c846f601c631ae793a66a2e3561e270f53e2310897e5baaf8f62dca99f3d.exe
Size 45KB
Sample260815-qfc65ack6t
SHA256 7b73c846f601c631ae793a66a2e3561e270f53e2310897e5baaf8f62dca99f3d
MD5 06fed3598d4b7744d190bbb92f202110
SHA1 98a9cd8ed45ad6e0005fc769781627640d4d7c5c
SHA512 e9fa1e5cca88221b5ca71fb1c05fb04bc373f18933fa08c4842a516776dc7b5ba7fe73df4adf4ce26da4968b2bea084115ec8950e2abb93d7856360011b8a9d7
SSDEEP 768:suJdpTP3tcsWUODmqmo2qVLGsGx8OHuPI2zjbxgg3ix4xqn4ml0ibr3lLl7BDZkx:suJdpTPdI2mez323b+gSx4xq4ATP1dkx
TLSH
T106231A003BE8812BF2BE4F7498F26145867EF6636603D64E2CC452D75623FC68A526FD
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
stuxnet.ads.zorvec.name:80
stuxnet.ads.zorvec.name:22
stuxnet.ads.zorvec.name:8080
stuxnet.ads.zorvec.name:8880
stuxnet.ads.zorvec.name:2052
stuxnet.ads.zorvec.name:2082
stuxnet.ads.zorvec.name:2086
stuxnet.ads.zorvec.name:2095
stuxnet.ads.zorvec.name:443
stuxnet.ads.zorvec.name:2053
stuxnet.ads.zorvec.name:2083
stuxnet.ads.zorvec.name:2087
stuxnet.ads.zorvec.name:2096
stuxnet.ads.zorvec.name:8443
azorult.ads.zorvec.name:80
azorult.ads.zorvec.name:22
azorult.ads.zorvec.name:8080
azorult.ads.zorvec.name:8880
azorult.ads.zorvec.name:2052
azorult.ads.zorvec.name:2082
azorult.ads.zorvec.name:2086
azorult.ads.zorvec.name:2095
azorult.ads.zorvec.name:443
azorult.ads.zorvec.name:2053
azorult.ads.zorvec.name:2083
azorult.ads.zorvec.name:2087
azorult.ads.zorvec.name:2096
azorult.ads.zorvec.name:8443

Mutex

YYyZYqhIakFb

Attributes

delay
0
install
true
install_file
h3mgk6kh.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/0x000e00000002400e-8.dat	family_asyncrat
behavioral1/memory/4072-13-0x0000000004A40000-0x0000000004A50000-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-1-5-21-889581200-2041691093-2048517887-1000\Control Panel\International\Geo\Nation	7b73c846f601c631ae793a66a2e3561e270f53e2310897e5baaf8f62dca99f3d.exe

Executes dropped EXE 2 IoCs

pid	Process
4072	h3mgk6kh.exe
3804	h3mgk6kh.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	55	104.21.28.44:22	4072	h3mgk6kh.exe
SSH destination	63	172.67.144.58:22	4072	h3mgk6kh.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
3800	cmd.exe
2532	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	h3mgk6kh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	h3mgk6kh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	7b73c846f601c631ae793a66a2e3561e270f53e2310897e5baaf8f62dca99f3d.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	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
4128	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
4148	schtasks.exe

Suspicious behavior: EnumeratesProcesses 21 IoCs

pid	Process
3680	7b73c846f601c631ae793a66a2e3561e270f53e2310897e5baaf8f62dca99f3d.exe
3680	7b73c846f601c631ae793a66a2e3561e270f53e2310897e5baaf8f62dca99f3d.exe
3680	7b73c846f601c631ae793a66a2e3561e270f53e2310897e5baaf8f62dca99f3d.exe
3680	7b73c846f601c631ae793a66a2e3561e270f53e2310897e5baaf8f62dca99f3d.exe
3680	7b73c846f601c631ae793a66a2e3561e270f53e2310897e5baaf8f62dca99f3d.exe
3680	7b73c846f601c631ae793a66a2e3561e270f53e2310897e5baaf8f62dca99f3d.exe
3680	7b73c846f601c631ae793a66a2e3561e270f53e2310897e5baaf8f62dca99f3d.exe
3680	7b73c846f601c631ae793a66a2e3561e270f53e2310897e5baaf8f62dca99f3d.exe
3680	7b73c846f601c631ae793a66a2e3561e270f53e2310897e5baaf8f62dca99f3d.exe
3680	7b73c846f601c631ae793a66a2e3561e270f53e2310897e5baaf8f62dca99f3d.exe
3680	7b73c846f601c631ae793a66a2e3561e270f53e2310897e5baaf8f62dca99f3d.exe
3680	7b73c846f601c631ae793a66a2e3561e270f53e2310897e5baaf8f62dca99f3d.exe
3680	7b73c846f601c631ae793a66a2e3561e270f53e2310897e5baaf8f62dca99f3d.exe
3680	7b73c846f601c631ae793a66a2e3561e270f53e2310897e5baaf8f62dca99f3d.exe
3680	7b73c846f601c631ae793a66a2e3561e270f53e2310897e5baaf8f62dca99f3d.exe
3680	7b73c846f601c631ae793a66a2e3561e270f53e2310897e5baaf8f62dca99f3d.exe
3680	7b73c846f601c631ae793a66a2e3561e270f53e2310897e5baaf8f62dca99f3d.exe
3680	7b73c846f601c631ae793a66a2e3561e270f53e2310897e5baaf8f62dca99f3d.exe
3680	7b73c846f601c631ae793a66a2e3561e270f53e2310897e5baaf8f62dca99f3d.exe
3680	7b73c846f601c631ae793a66a2e3561e270f53e2310897e5baaf8f62dca99f3d.exe
3680	7b73c846f601c631ae793a66a2e3561e270f53e2310897e5baaf8f62dca99f3d.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3680	7b73c846f601c631ae793a66a2e3561e270f53e2310897e5baaf8f62dca99f3d.exe
Token: SeDebugPrivilege	4072	h3mgk6kh.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 3680 wrote to memory of 3800	3680	7b73c846f601c631ae793a66a2e3561e270f53e2310897e5baaf8f62dca99f3d.exe	85
PID 3680 wrote to memory of 2532	3680	7b73c846f601c631ae793a66a2e3561e270f53e2310897e5baaf8f62dca99f3d.exe	87
PID 2532 wrote to memory of 4128	2532	cmd.exe	89
PID 3800 wrote to memory of 4148	3800	cmd.exe	90
PID 2532 wrote to memory of 3804	2532	cmd.exe	94

C:\Users\Admin\AppData\Local\Temp\7b73c846f601c631ae793a66a2e3561e270f53e2310897e5baaf8f62dca99f3d.exe
"C:\Users\Admin\AppData\Local\Temp\7b73c846f601c631ae793a66a2e3561e270f53e2310897e5baaf8f62dca99f3d.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3680
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "h3mgk6kh" /tr '"C:\Users\Admin\AppData\Roaming\h3mgk6kh.exe"' & exit
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3800
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "h3mgk6kh" /tr '"C:\Users\Admin\AppData\Roaming\h3mgk6kh.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:4148
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp508C.tmp.bat""
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2532
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:4128
- - C:\Users\Admin\AppData\Roaming\h3mgk6kh.exe
    "C:\Users\Admin\AppData\Roaming\h3mgk6kh.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:3804

C:\Users\Admin\AppData\Roaming\h3mgk6kh.exe
"C:\Users\Admin\AppData\Roaming\h3mgk6kh.exe"
1⤵
- Executes dropped EXE
- Outbound SSH connection to public host
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:4072

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

tmp508C.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmp508C.tmp.bat
Size 152B
SHA256 0e247695e9f0a7702457db7bb81622938a1235f25eaa74b05f87dfa9c09b004e
MD5 9c54865090bf1270f4e1e042fe3c1f25
SHA1 e62807726848bdb2cf6ad8fd8551559f2c053b23
SHA512 05a7fed44b24f2066cf491b343cf4a03a260e9abb2bf38208e609681232412e874f535579f51f44bdd6068917b0aba6e9b3b1ef8fb3fbda2ad3fdf7514d3875f
TLSH
T15EC08C4299C5AA0E290A241302BAE9CDA2666C1A3F80AB108F04944A6280848E4D924A
MD5 SHA1 SHA512 TLSH

Submit Download

h3mgk6kh.exe

Path C:\Users\Admin\AppData\Roaming\h3mgk6kh.exe
Size 45KB
SHA256 7b73c846f601c631ae793a66a2e3561e270f53e2310897e5baaf8f62dca99f3d
MD5 06fed3598d4b7744d190bbb92f202110
SHA1 98a9cd8ed45ad6e0005fc769781627640d4d7c5c
SHA512 e9fa1e5cca88221b5ca71fb1c05fb04bc373f18933fa08c4842a516776dc7b5ba7fe73df4adf4ce26da4968b2bea084115ec8950e2abb93d7856360011b8a9d7
SSDEEP 768:suJdpTP3tcsWUODmqmo2qVLGsGx8OHuPI2zjbxgg3ix4xqn4ml0ibr3lLl7BDZkx:suJdpTPdI2mez323b+gSx4xq4ATP1dkx
TLSH
T106231A003BE8812BF2BE4F7498F26145867EF6636603D64E2CC452D75623FC68A526FD
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/3680-0-0x0000000000370000-0x0000000000382000-memory.dmp

Download

memory/3680-1-0x0000000004D70000-0x0000000004D80000-memory.dmp

Download

memory/3680-2-0x0000000004D80000-0x0000000004E1C000-memory.dmp

Download

memory/4072-10-0x0000000004A40000-0x0000000004A50000-memory.dmp

Download

memory/4072-13-0x0000000004A40000-0x0000000004A50000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

Replay Monitor

Loading Replay Monitor...

Downloads