asyncrat | ee3ff56759bcc3c7a3aa0522189dc887aa65184dda8f9d06b90be81af0377a7b

General

Target
ee3ff56759bcc3c7a3aa0522189dc887aa65184dda8f9d06b90be81af0377a7b.exe
Size 45KB
Sample260804-wntfzabl61
SHA256 ee3ff56759bcc3c7a3aa0522189dc887aa65184dda8f9d06b90be81af0377a7b
MD5 0abe29c1f6351795f4ad262f65db7a86
SHA1 42dd297ff25fbc4f82e3c2167d04ed9a638ad62c
SHA512 ecd96e710cee0696b9b81afa094b431f49b819e7104424751ed248d95402c9e6ec35b43c3f9d15be2fbb4deaeec9099f7d60a1eea4bb910b077d358eac11f7fb
SSDEEP 768:5udApTNctooWUS7C+mo2qt+oTXwJZPIOzabRgX3ienBlpIBBDZ0x:5udApTNmU2CLfOObeXSuBH8d0x
TLSH
T1F8231B0037E8812BF2BE4F74ADF26146867AF6773603D58A1CC4419B5723BC69A426FD
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

phimdugai.blog:80
phimdugai.blog:22
phimdugai.blog:8080
phimdugai.blog:8880
phimdugai.blog:2052
phimdugai.blog:2082
phimdugai.blog:2086
phimdugai.blog:2095
phimdugai.blog:443
phimdugai.blog:2053
phimdugai.blog:2083
phimdugai.blog:2087
phimdugai.blog:2096
phimdugai.blog:8443
www.phimdugai.blog:80
www.phimdugai.blog:22
www.phimdugai.blog:8080
www.phimdugai.blog:8880
www.phimdugai.blog:2052
www.phimdugai.blog:2082
www.phimdugai.blog:2086
www.phimdugai.blog:2095
www.phimdugai.blog:443
www.phimdugai.blog:2053
www.phimdugai.blog:2083
www.phimdugai.blog:2087
www.phimdugai.blog:2096
www.phimdugai.blog:8443
qakbot.phimdugai.blog:80
qakbot.phimdugai.blog:22
qakbot.phimdugai.blog:8080
qakbot.phimdugai.blog:8880
qakbot.phimdugai.blog:2052
qakbot.phimdugai.blog:2082
qakbot.phimdugai.blog:2086
qakbot.phimdugai.blog:2095
qakbot.phimdugai.blog:443
qakbot.phimdugai.blog:2053
qakbot.phimdugai.blog:2083
qakbot.phimdugai.blog:2087
qakbot.phimdugai.blog:2096
qakbot.phimdugai.blog:8443
client.phimdugai.blog:80
client.phimdugai.blog:22
client.phimdugai.blog:8080
client.phimdugai.blog:8880
client.phimdugai.blog:2052
client.phimdugai.blog:2082
client.phimdugai.blog:2086
client.phimdugai.blog:2095
client.phimdugai.blog:443
client.phimdugai.blog:2053
client.phimdugai.blog:2083
client.phimdugai.blog:2087
client.phimdugai.blog:2096
client.phimdugai.blog:8443

Mutex

CaoTMHzpbWum

Attributes

delay
0
install
true
install_file
v3olle.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/0x000300000001e6a5-8.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-1-5-21-2370214745-1838013427-2987045292-1000\Control Panel\International\Geo\Nation	ee3ff56759bcc3c7a3aa0522189dc887aa65184dda8f9d06b90be81af0377a7b.exe

Executes dropped EXE 2 IoCs

pid	Process
3872	v3olle.exe
532	v3olle.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	52	172.67.187.216:22	3872	v3olle.exe
SSH destination	56	104.21.56.197:22	3872	v3olle.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
3520	cmd.exe
4112	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	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	v3olle.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	v3olle.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ee3ff56759bcc3c7a3aa0522189dc887aa65184dda8f9d06b90be81af0377a7b.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

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
1244	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
1716	schtasks.exe

Suspicious behavior: EnumeratesProcesses 23 IoCs

pid	Process
2304	ee3ff56759bcc3c7a3aa0522189dc887aa65184dda8f9d06b90be81af0377a7b.exe
2304	ee3ff56759bcc3c7a3aa0522189dc887aa65184dda8f9d06b90be81af0377a7b.exe
2304	ee3ff56759bcc3c7a3aa0522189dc887aa65184dda8f9d06b90be81af0377a7b.exe
2304	ee3ff56759bcc3c7a3aa0522189dc887aa65184dda8f9d06b90be81af0377a7b.exe
2304	ee3ff56759bcc3c7a3aa0522189dc887aa65184dda8f9d06b90be81af0377a7b.exe
2304	ee3ff56759bcc3c7a3aa0522189dc887aa65184dda8f9d06b90be81af0377a7b.exe
2304	ee3ff56759bcc3c7a3aa0522189dc887aa65184dda8f9d06b90be81af0377a7b.exe
2304	ee3ff56759bcc3c7a3aa0522189dc887aa65184dda8f9d06b90be81af0377a7b.exe
2304	ee3ff56759bcc3c7a3aa0522189dc887aa65184dda8f9d06b90be81af0377a7b.exe
2304	ee3ff56759bcc3c7a3aa0522189dc887aa65184dda8f9d06b90be81af0377a7b.exe
2304	ee3ff56759bcc3c7a3aa0522189dc887aa65184dda8f9d06b90be81af0377a7b.exe
2304	ee3ff56759bcc3c7a3aa0522189dc887aa65184dda8f9d06b90be81af0377a7b.exe
2304	ee3ff56759bcc3c7a3aa0522189dc887aa65184dda8f9d06b90be81af0377a7b.exe
2304	ee3ff56759bcc3c7a3aa0522189dc887aa65184dda8f9d06b90be81af0377a7b.exe
2304	ee3ff56759bcc3c7a3aa0522189dc887aa65184dda8f9d06b90be81af0377a7b.exe
2304	ee3ff56759bcc3c7a3aa0522189dc887aa65184dda8f9d06b90be81af0377a7b.exe
2304	ee3ff56759bcc3c7a3aa0522189dc887aa65184dda8f9d06b90be81af0377a7b.exe
2304	ee3ff56759bcc3c7a3aa0522189dc887aa65184dda8f9d06b90be81af0377a7b.exe
2304	ee3ff56759bcc3c7a3aa0522189dc887aa65184dda8f9d06b90be81af0377a7b.exe
2304	ee3ff56759bcc3c7a3aa0522189dc887aa65184dda8f9d06b90be81af0377a7b.exe
2304	ee3ff56759bcc3c7a3aa0522189dc887aa65184dda8f9d06b90be81af0377a7b.exe
2304	ee3ff56759bcc3c7a3aa0522189dc887aa65184dda8f9d06b90be81af0377a7b.exe
2304	ee3ff56759bcc3c7a3aa0522189dc887aa65184dda8f9d06b90be81af0377a7b.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2304	ee3ff56759bcc3c7a3aa0522189dc887aa65184dda8f9d06b90be81af0377a7b.exe
Token: SeDebugPrivilege	3872	v3olle.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 2304 wrote to memory of 3520	2304	ee3ff56759bcc3c7a3aa0522189dc887aa65184dda8f9d06b90be81af0377a7b.exe	87
PID 2304 wrote to memory of 4112	2304	ee3ff56759bcc3c7a3aa0522189dc887aa65184dda8f9d06b90be81af0377a7b.exe	89
PID 4112 wrote to memory of 1244	4112	cmd.exe	91
PID 3520 wrote to memory of 1716	3520	cmd.exe	92
PID 4112 wrote to memory of 532	4112	cmd.exe	97

C:\Users\Admin\AppData\Local\Temp\ee3ff56759bcc3c7a3aa0522189dc887aa65184dda8f9d06b90be81af0377a7b.exe
"C:\Users\Admin\AppData\Local\Temp\ee3ff56759bcc3c7a3aa0522189dc887aa65184dda8f9d06b90be81af0377a7b.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2304
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "v3olle" /tr '"C:\Users\Admin\AppData\Roaming\v3olle.exe"' & exit
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3520
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "v3olle" /tr '"C:\Users\Admin\AppData\Roaming\v3olle.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:1716
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp45BE.tmp.bat""
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4112
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:1244
- - C:\Users\Admin\AppData\Roaming\v3olle.exe
    "C:\Users\Admin\AppData\Roaming\v3olle.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:532

C:\Users\Admin\AppData\Roaming\v3olle.exe
"C:\Users\Admin\AppData\Roaming\v3olle.exe"
1⤵
- Executes dropped EXE
- Outbound SSH connection to public host
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:3872

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

tmp45BE.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmp45BE.tmp.bat
Size 150B
SHA256 e417d42da8636908f520eaa6d9e1a6b28d3a8f15448daf310dea3df053559943
MD5 0466e3eab9ef93b082d84fcfd02eabf3
SHA1 4d3130775dcc6bb38a81517c31e0b3c5f19da4c3
SHA512 250c8c4a9d76aa96f5b316364f4a37594167623e4f0b4a94b7ae3959856eb06e6945ceee76aa40cbe0f205837d38faa827490a9c4039b98550e937bb8188fbc7
TLSH
T191C08C4651C5AA0E2805245312BA989C91A2A8193E44AB00C70444491680948E599287
MD5 SHA1 SHA512 TLSH

Submit Download

v3olle.exe

Path C:\Users\Admin\AppData\Roaming\v3olle.exe
Size 45KB
SHA256 ee3ff56759bcc3c7a3aa0522189dc887aa65184dda8f9d06b90be81af0377a7b
MD5 0abe29c1f6351795f4ad262f65db7a86
SHA1 42dd297ff25fbc4f82e3c2167d04ed9a638ad62c
SHA512 ecd96e710cee0696b9b81afa094b431f49b819e7104424751ed248d95402c9e6ec35b43c3f9d15be2fbb4deaeec9099f7d60a1eea4bb910b077d358eac11f7fb
SSDEEP 768:5udApTNctooWUS7C+mo2qt+oTXwJZPIOzabRgX3ienBlpIBBDZ0x:5udApTNmU2CLfOObeXSuBH8d0x
TLSH
T1F8231B0037E8812BF2BE4F74ADF26146867AF6773603D58A1CC4419B5723BC69A426FD
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/2304-0-0x0000000000FD0000-0x0000000000FE2000-memory.dmp

Download

memory/2304-1-0x00000000058C0000-0x00000000058D0000-memory.dmp

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memory/2304-2-0x0000000005990000-0x0000000005A2C000-memory.dmp

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memory/3872-10-0x00000000051E0000-0x00000000051F0000-memory.dmp

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memory/3872-13-0x00000000051E0000-0x00000000051F0000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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