asyncrat | b32f9199c71e15af03a9ba73c7a005dc328ca48111be2b59c7fbc066b1fe019f

General

Target
b32f9199c71e15af03a9ba73c7a005dc328ca48111be2b59c7fbc066b1fe019f.exe
Size 45KB
Sample260731-wx176sdp21
SHA256 b32f9199c71e15af03a9ba73c7a005dc328ca48111be2b59c7fbc066b1fe019f
MD5 79fb9b1c1c65c2587a86b7629b053b8b
SHA1 29638684376e65b81f5cd5fa5209cf4ab2672747
SHA512 77aa0346cea560d17c303737f9edfd963f288ee24efe964fd9541297108b9e4486fb71da51deed156a67909f996fee79e2c3c14f7af6e405f9b5100ef59c6ff4
SSDEEP 768:suJdpTP3tcsWUODmqmo2qVCT2Qpm7PIKojbHgX3i+uj/lOUowYsBDZkx:suJdpTPdI2+eKAbAXS+ujtDYqdkx
TLSH
T1A7231A003BE8822BF2BE5F7898F26145867AF6637603D5492CC452D75623BC68A426FD
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

tipphimsexhay.com:80
tipphimsexhay.com:22
tipphimsexhay.com:8080
tipphimsexhay.com:8880
tipphimsexhay.com:2052
tipphimsexhay.com:2082
tipphimsexhay.com:2086
tipphimsexhay.com:2095
tipphimsexhay.com:443
tipphimsexhay.com:2053
tipphimsexhay.com:2083
tipphimsexhay.com:2087
tipphimsexhay.com:2096
tipphimsexhay.com:8443
www.tipphimsexhay.com:80
www.tipphimsexhay.com:22
www.tipphimsexhay.com:8080
www.tipphimsexhay.com:8880
www.tipphimsexhay.com:2052
www.tipphimsexhay.com:2082
www.tipphimsexhay.com:2086
www.tipphimsexhay.com:2095
www.tipphimsexhay.com:443
www.tipphimsexhay.com:2053
www.tipphimsexhay.com:2083
www.tipphimsexhay.com:2087
www.tipphimsexhay.com:2096
www.tipphimsexhay.com:8443
fakeupdates.tipphimsexhay.com:80
fakeupdates.tipphimsexhay.com:22
fakeupdates.tipphimsexhay.com:8080
fakeupdates.tipphimsexhay.com:8880
fakeupdates.tipphimsexhay.com:2052
fakeupdates.tipphimsexhay.com:2082
fakeupdates.tipphimsexhay.com:2086
fakeupdates.tipphimsexhay.com:2095
fakeupdates.tipphimsexhay.com:443
fakeupdates.tipphimsexhay.com:2053
fakeupdates.tipphimsexhay.com:2083
fakeupdates.tipphimsexhay.com:2087
fakeupdates.tipphimsexhay.com:2096
fakeupdates.tipphimsexhay.com:8443
locky.tipphimsexhay.com:80
locky.tipphimsexhay.com:22
locky.tipphimsexhay.com:8080
locky.tipphimsexhay.com:8880
locky.tipphimsexhay.com:2052
locky.tipphimsexhay.com:2082
locky.tipphimsexhay.com:2086
locky.tipphimsexhay.com:2095
locky.tipphimsexhay.com:443
locky.tipphimsexhay.com:2053
locky.tipphimsexhay.com:2083
locky.tipphimsexhay.com:2087
locky.tipphimsexhay.com:2096
locky.tipphimsexhay.com:8443

Mutex

pxexMvTKBGJZ

Attributes

delay
0
install
true
install_file
4gqy9bl7.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
behavioral1/files/0x0008000000024576-8.dat	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-1-5-21-540052884-2969440504-464782435-1000\Control Panel\International\Geo\Nation	b32f9199c71e15af03a9ba73c7a005dc328ca48111be2b59c7fbc066b1fe019f.exe

Executes dropped EXE 2 IoCs

pid	Process
2960	4gqy9bl7.exe
3204	4gqy9bl7.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	62	172.67.208.185:22	2960	4gqy9bl7.exe
SSH destination	44	104.21.69.133:22	2960	4gqy9bl7.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
1820	cmd.exe
3972	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	4gqy9bl7.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b32f9199c71e15af03a9ba73c7a005dc328ca48111be2b59c7fbc066b1fe019f.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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4gqy9bl7.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
1848	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
1704	schtasks.exe

Suspicious behavior: EnumeratesProcesses 23 IoCs

pid	Process
1184	b32f9199c71e15af03a9ba73c7a005dc328ca48111be2b59c7fbc066b1fe019f.exe
1184	b32f9199c71e15af03a9ba73c7a005dc328ca48111be2b59c7fbc066b1fe019f.exe
1184	b32f9199c71e15af03a9ba73c7a005dc328ca48111be2b59c7fbc066b1fe019f.exe
1184	b32f9199c71e15af03a9ba73c7a005dc328ca48111be2b59c7fbc066b1fe019f.exe
1184	b32f9199c71e15af03a9ba73c7a005dc328ca48111be2b59c7fbc066b1fe019f.exe
1184	b32f9199c71e15af03a9ba73c7a005dc328ca48111be2b59c7fbc066b1fe019f.exe
1184	b32f9199c71e15af03a9ba73c7a005dc328ca48111be2b59c7fbc066b1fe019f.exe
1184	b32f9199c71e15af03a9ba73c7a005dc328ca48111be2b59c7fbc066b1fe019f.exe
1184	b32f9199c71e15af03a9ba73c7a005dc328ca48111be2b59c7fbc066b1fe019f.exe
1184	b32f9199c71e15af03a9ba73c7a005dc328ca48111be2b59c7fbc066b1fe019f.exe
1184	b32f9199c71e15af03a9ba73c7a005dc328ca48111be2b59c7fbc066b1fe019f.exe
1184	b32f9199c71e15af03a9ba73c7a005dc328ca48111be2b59c7fbc066b1fe019f.exe
1184	b32f9199c71e15af03a9ba73c7a005dc328ca48111be2b59c7fbc066b1fe019f.exe
1184	b32f9199c71e15af03a9ba73c7a005dc328ca48111be2b59c7fbc066b1fe019f.exe
1184	b32f9199c71e15af03a9ba73c7a005dc328ca48111be2b59c7fbc066b1fe019f.exe
1184	b32f9199c71e15af03a9ba73c7a005dc328ca48111be2b59c7fbc066b1fe019f.exe
1184	b32f9199c71e15af03a9ba73c7a005dc328ca48111be2b59c7fbc066b1fe019f.exe
1184	b32f9199c71e15af03a9ba73c7a005dc328ca48111be2b59c7fbc066b1fe019f.exe
1184	b32f9199c71e15af03a9ba73c7a005dc328ca48111be2b59c7fbc066b1fe019f.exe
1184	b32f9199c71e15af03a9ba73c7a005dc328ca48111be2b59c7fbc066b1fe019f.exe
1184	b32f9199c71e15af03a9ba73c7a005dc328ca48111be2b59c7fbc066b1fe019f.exe
1184	b32f9199c71e15af03a9ba73c7a005dc328ca48111be2b59c7fbc066b1fe019f.exe
1184	b32f9199c71e15af03a9ba73c7a005dc328ca48111be2b59c7fbc066b1fe019f.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1184	b32f9199c71e15af03a9ba73c7a005dc328ca48111be2b59c7fbc066b1fe019f.exe
Token: SeDebugPrivilege	2960	4gqy9bl7.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 1184 wrote to memory of 1820	1184	b32f9199c71e15af03a9ba73c7a005dc328ca48111be2b59c7fbc066b1fe019f.exe	85
PID 1184 wrote to memory of 3972	1184	b32f9199c71e15af03a9ba73c7a005dc328ca48111be2b59c7fbc066b1fe019f.exe	87
PID 3972 wrote to memory of 1848	3972	cmd.exe	89
PID 1820 wrote to memory of 1704	1820	cmd.exe	90
PID 3972 wrote to memory of 3204	3972	cmd.exe	97

C:\Users\Admin\AppData\Local\Temp\b32f9199c71e15af03a9ba73c7a005dc328ca48111be2b59c7fbc066b1fe019f.exe
"C:\Users\Admin\AppData\Local\Temp\b32f9199c71e15af03a9ba73c7a005dc328ca48111be2b59c7fbc066b1fe019f.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1184
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "4gqy9bl7" /tr '"C:\Users\Admin\AppData\Roaming\4gqy9bl7.exe"' & exit
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1820
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "4gqy9bl7" /tr '"C:\Users\Admin\AppData\Roaming\4gqy9bl7.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:1704
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp1CBA.tmp.bat""
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3972
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:1848
- - C:\Users\Admin\AppData\Roaming\4gqy9bl7.exe
    "C:\Users\Admin\AppData\Roaming\4gqy9bl7.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:3204

C:\Users\Admin\AppData\Roaming\4gqy9bl7.exe
"C:\Users\Admin\AppData\Roaming\4gqy9bl7.exe"
1⤵
- Executes dropped EXE
- Outbound SSH connection to public host
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:2960

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

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Downloads

tmp1CBA.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmp1CBA.tmp.bat
Size 152B
SHA256 680f19cc1930a70cb9184bd469b44d1bb69bec6e04c59cca20d27ce21568811e
MD5 e969f5a4f71aa77e1d169620bed131a2
SHA1 8076a666930fd768b5c8bc38742680526661d4d5
SHA512 53e6d59e3b4c5c1b2ed04450d13e6cfca78b75337bdd1967dc90a2d7d2c7f65cc6228081232bc643d33dc159bbec91b7bd44065779842668dfd0e556a42a022c
TLSH
T16AC08C4295C5EA6E6909145302FA948C91B2A8193E80AB00830C484D2280448F1D9385
MD5 SHA1 SHA512 TLSH

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4gqy9bl7.exe

Path C:\Users\Admin\AppData\Roaming\4gqy9bl7.exe
Size 45KB
SHA256 b32f9199c71e15af03a9ba73c7a005dc328ca48111be2b59c7fbc066b1fe019f
MD5 79fb9b1c1c65c2587a86b7629b053b8b
SHA1 29638684376e65b81f5cd5fa5209cf4ab2672747
SHA512 77aa0346cea560d17c303737f9edfd963f288ee24efe964fd9541297108b9e4486fb71da51deed156a67909f996fee79e2c3c14f7af6e405f9b5100ef59c6ff4
SSDEEP 768:suJdpTP3tcsWUODmqmo2qVCT2Qpm7PIKojbHgX3i+uj/lOUowYsBDZkx:suJdpTPdI2+eKAbAXS+ujtDYqdkx
TLSH
T1A7231A003BE8822BF2BE5F7898F26145867AF6637603D5492CC452D75623BC68A426FD
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/1184-0-0x0000000000E70000-0x0000000000E82000-memory.dmp

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memory/1184-1-0x00000000058C0000-0x00000000058D0000-memory.dmp

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memory/1184-2-0x00000000058D0000-0x000000000596C000-memory.dmp

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memory/2960-10-0x00000000058E0000-0x00000000058F0000-memory.dmp

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memory/2960-13-0x00000000058E0000-0x00000000058F0000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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