asyncrat | 66664569a9f1416d80d3df85adc823579ba64795b3484f2ab24a326abdca9768

General

Target
66664569a9f1416d80d3df85adc823579ba64795b3484f2ab24a326abdca9768.exe
Size 45KB
Sample260919-wvftfswtat
SHA256 66664569a9f1416d80d3df85adc823579ba64795b3484f2ab24a326abdca9768
MD5 4589f6696754104e58f13237562599aa
SHA1 d4bf955dfc12fa248be653391c9081dbca96dad0
SHA512 43edd4b00067004e2fc923de34bb4402e96286f8e6fe5350147c5038e4a4b81c0b56561d74b8b08cb8f42b2ad006dd60e3b06765baede98adcd2a45c556380dd
SSDEEP 768:wuDWZTpw7bmaWUg3gSk0mo2ql43FoDEaOPIqzjbegX3idvfV9uoMO8MNRBDZMx:wuDWZTpMZSB2JKEa3q3bhXSR98DOHdMx
TLSH
T111232B003BE8822BF2BE5F789CF26145467AF1637603D6491CC452DB5623FC69A426FA
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

xemphimheo.org:80
xemphimheo.org:22
xemphimheo.org:8080
xemphimheo.org:8880
xemphimheo.org:2052
xemphimheo.org:2082
xemphimheo.org:2086
xemphimheo.org:2095
xemphimheo.org:443
xemphimheo.org:2053
xemphimheo.org:2083
xemphimheo.org:2087
xemphimheo.org:2096
xemphimheo.org:8443
www.xemphimheo.org:80
www.xemphimheo.org:22
www.xemphimheo.org:8080
www.xemphimheo.org:8880
www.xemphimheo.org:2052
www.xemphimheo.org:2082
www.xemphimheo.org:2086
www.xemphimheo.org:2095
www.xemphimheo.org:443
www.xemphimheo.org:2053
www.xemphimheo.org:2083
www.xemphimheo.org:2087
www.xemphimheo.org:2096
www.xemphimheo.org:8443
locky.xemphimheo.org:80
locky.xemphimheo.org:22
locky.xemphimheo.org:8080
locky.xemphimheo.org:8880
locky.xemphimheo.org:2052
locky.xemphimheo.org:2082
locky.xemphimheo.org:2086
locky.xemphimheo.org:2095
locky.xemphimheo.org:443
locky.xemphimheo.org:2053
locky.xemphimheo.org:2083
locky.xemphimheo.org:2087
locky.xemphimheo.org:2096
locky.xemphimheo.org:8443
codered.xemphimheo.org:80
codered.xemphimheo.org:22
codered.xemphimheo.org:8080
codered.xemphimheo.org:8880
codered.xemphimheo.org:2052
codered.xemphimheo.org:2082
codered.xemphimheo.org:2086
codered.xemphimheo.org:2095
codered.xemphimheo.org:443
codered.xemphimheo.org:2053
codered.xemphimheo.org:2083
codered.xemphimheo.org:2087
codered.xemphimheo.org:2096
codered.xemphimheo.org:8443

Mutex

YwleBOqCK6EK

Attributes

delay
0
install
true
install_file
6agn2.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/0x00090000000243bf-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-1-5-21-681733028-2344970462-962213935-1000\Control Panel\International\Geo\Nation	66664569a9f1416d80d3df85adc823579ba64795b3484f2ab24a326abdca9768.exe

Executes dropped EXE 2 IoCs

pid	Process
6060	6agn2.exe
740	6agn2.exe

Outbound SSH connection to public host 2 TTPs 3 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	80	5.61.208.88:22	6060	6agn2.exe
SSH destination	86	5.61.208.88:22	6060	6agn2.exe
SSH destination	98	5.61.208.88:22	6060	6agn2.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
5472	cmd.exe
4004	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	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	6agn2.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	6agn2.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	66664569a9f1416d80d3df85adc823579ba64795b3484f2ab24a326abdca9768.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
864	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
3744	schtasks.exe

Suspicious behavior: EnumeratesProcesses 23 IoCs

pid	Process
640	66664569a9f1416d80d3df85adc823579ba64795b3484f2ab24a326abdca9768.exe
640	66664569a9f1416d80d3df85adc823579ba64795b3484f2ab24a326abdca9768.exe
640	66664569a9f1416d80d3df85adc823579ba64795b3484f2ab24a326abdca9768.exe
640	66664569a9f1416d80d3df85adc823579ba64795b3484f2ab24a326abdca9768.exe
640	66664569a9f1416d80d3df85adc823579ba64795b3484f2ab24a326abdca9768.exe
640	66664569a9f1416d80d3df85adc823579ba64795b3484f2ab24a326abdca9768.exe
640	66664569a9f1416d80d3df85adc823579ba64795b3484f2ab24a326abdca9768.exe
640	66664569a9f1416d80d3df85adc823579ba64795b3484f2ab24a326abdca9768.exe
640	66664569a9f1416d80d3df85adc823579ba64795b3484f2ab24a326abdca9768.exe
640	66664569a9f1416d80d3df85adc823579ba64795b3484f2ab24a326abdca9768.exe
640	66664569a9f1416d80d3df85adc823579ba64795b3484f2ab24a326abdca9768.exe
640	66664569a9f1416d80d3df85adc823579ba64795b3484f2ab24a326abdca9768.exe
640	66664569a9f1416d80d3df85adc823579ba64795b3484f2ab24a326abdca9768.exe
640	66664569a9f1416d80d3df85adc823579ba64795b3484f2ab24a326abdca9768.exe
640	66664569a9f1416d80d3df85adc823579ba64795b3484f2ab24a326abdca9768.exe
640	66664569a9f1416d80d3df85adc823579ba64795b3484f2ab24a326abdca9768.exe
640	66664569a9f1416d80d3df85adc823579ba64795b3484f2ab24a326abdca9768.exe
640	66664569a9f1416d80d3df85adc823579ba64795b3484f2ab24a326abdca9768.exe
640	66664569a9f1416d80d3df85adc823579ba64795b3484f2ab24a326abdca9768.exe
640	66664569a9f1416d80d3df85adc823579ba64795b3484f2ab24a326abdca9768.exe
640	66664569a9f1416d80d3df85adc823579ba64795b3484f2ab24a326abdca9768.exe
640	66664569a9f1416d80d3df85adc823579ba64795b3484f2ab24a326abdca9768.exe
640	66664569a9f1416d80d3df85adc823579ba64795b3484f2ab24a326abdca9768.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	640	66664569a9f1416d80d3df85adc823579ba64795b3484f2ab24a326abdca9768.exe
Token: SeDebugPrivilege	6060	6agn2.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 640 wrote to memory of 5472	640	66664569a9f1416d80d3df85adc823579ba64795b3484f2ab24a326abdca9768.exe	89
PID 640 wrote to memory of 4004	640	66664569a9f1416d80d3df85adc823579ba64795b3484f2ab24a326abdca9768.exe	91
PID 4004 wrote to memory of 864	4004	cmd.exe	93
PID 5472 wrote to memory of 3744	5472	cmd.exe	94
PID 4004 wrote to memory of 740	4004	cmd.exe	101

C:\Users\Admin\AppData\Local\Temp\66664569a9f1416d80d3df85adc823579ba64795b3484f2ab24a326abdca9768.exe
"C:\Users\Admin\AppData\Local\Temp\66664569a9f1416d80d3df85adc823579ba64795b3484f2ab24a326abdca9768.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:640
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "6agn2" /tr '"C:\Users\Admin\AppData\Roaming\6agn2.exe"' & exit
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:5472
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "6agn2" /tr '"C:\Users\Admin\AppData\Roaming\6agn2.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:3744
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpA7E3.tmp.bat""
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4004
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:864
- - C:\Users\Admin\AppData\Roaming\6agn2.exe
    "C:\Users\Admin\AppData\Roaming\6agn2.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:740

C:\Users\Admin\AppData\Roaming\6agn2.exe
"C:\Users\Admin\AppData\Roaming\6agn2.exe"
1⤵
- Executes dropped EXE
- Outbound SSH connection to public host
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:6060

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

tmpA7E3.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmpA7E3.tmp.bat
Size 149B
SHA256 5aeaa52a900dec615ce10268e075a01fcd8245c786802223b70f0fd49d32eca2
MD5 a3409bfa2e7ebafa4a19588de7b9c815
SHA1 d79c1d17373f569118a049e1a9d7d2e4ece6d711
SHA512 55d9c250a71de8741ef5e5a1ae0d6a83a17b68f8f2731a1a87b99ded408be0c0f1ac02fafa096f809fe820c4c6046047a403a8d7d5ac49e60619f438aab76c43
TLSH
T1EBC02B8261C5FB0E7805141316FAD6DD917BBC593F44BB00C744400D62C046DF0D9342
MD5 SHA1 SHA512 TLSH

Submit Download

6agn2.exe

Path C:\Users\Admin\AppData\Roaming\6agn2.exe
Size 45KB
SHA256 66664569a9f1416d80d3df85adc823579ba64795b3484f2ab24a326abdca9768
MD5 4589f6696754104e58f13237562599aa
SHA1 d4bf955dfc12fa248be653391c9081dbca96dad0
SHA512 43edd4b00067004e2fc923de34bb4402e96286f8e6fe5350147c5038e4a4b81c0b56561d74b8b08cb8f42b2ad006dd60e3b06765baede98adcd2a45c556380dd
SSDEEP 768:wuDWZTpw7bmaWUg3gSk0mo2ql43FoDEaOPIqzjbegX3idvfV9uoMO8MNRBDZMx:wuDWZTpMZSB2JKEa3q3bhXSR98DOHdMx
TLSH
T111232B003BE8822BF2BE5F789CF26145467AF1637603D6491CC452DB5623FC69A426FA
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/640-0-0x0000000000310000-0x0000000000322000-memory.dmp

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memory/640-1-0x0000000004CC0000-0x0000000004CD0000-memory.dmp

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memory/640-2-0x0000000004D70000-0x0000000004E0C000-memory.dmp

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memory/6060-10-0x00000000056F0000-0x0000000005700000-memory.dmp

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memory/6060-13-0x00000000056F0000-0x0000000005700000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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