asyncrat | 5525fc01d41b523f1e127d166a107648376fd134b7f9637e6b42c92f7015c822

General

Target
5525fc01d41b523f1e127d166a107648376fd134b7f9637e6b42c92f7015c822.exe
Size 45KB
Sample260919-mcdrpsy1ev
SHA256 5525fc01d41b523f1e127d166a107648376fd134b7f9637e6b42c92f7015c822
MD5 d9d1cb9eecd73386b9443805708b62a8
SHA1 6d64dbc32c27cb161c12245ecf230ce2f754ea69
SHA512 41add962d6ae1106d9344ccc34b634fc278a0b3cb586ebdcf65e61eb2dd82024b8ef7f5708d8e5feb47c5c96600dfba047f984f2e380475a1725b9872bd5f156
SSDEEP 768:5uSy6pTpwrSWWUE3/WImo2qNVcQSCBznqNLPI7zjbwgX3iO7POkt18s0BDZ0x:5uSy6pTpoo2Ec9UqC73b3XS4OkPVCd0x
TLSH
T131232B0037E9C12BF2BE4F7899F26105467AF6632603E54D2CC452DB5623FC69A426FE
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

phimsexsub.fun:80
phimsexsub.fun:22
phimsexsub.fun:8080
phimsexsub.fun:8880
phimsexsub.fun:2052
phimsexsub.fun:2082
phimsexsub.fun:2086
phimsexsub.fun:2095
phimsexsub.fun:443
phimsexsub.fun:2053
phimsexsub.fun:2083
phimsexsub.fun:2087
phimsexsub.fun:2096
phimsexsub.fun:8443
www.phimsexsub.fun:80
www.phimsexsub.fun:22
www.phimsexsub.fun:8080
www.phimsexsub.fun:8880
www.phimsexsub.fun:2052
www.phimsexsub.fun:2082
www.phimsexsub.fun:2086
www.phimsexsub.fun:2095
www.phimsexsub.fun:443
www.phimsexsub.fun:2053
www.phimsexsub.fun:2083
www.phimsexsub.fun:2087
www.phimsexsub.fun:2096
www.phimsexsub.fun:8443
zbot.phimsexsub.fun:80
zbot.phimsexsub.fun:22
zbot.phimsexsub.fun:8080
zbot.phimsexsub.fun:8880
zbot.phimsexsub.fun:2052
zbot.phimsexsub.fun:2082
zbot.phimsexsub.fun:2086
zbot.phimsexsub.fun:2095
zbot.phimsexsub.fun:443
zbot.phimsexsub.fun:2053
zbot.phimsexsub.fun:2083
zbot.phimsexsub.fun:2087
zbot.phimsexsub.fun:2096
zbot.phimsexsub.fun:8443
conti.phimsexsub.fun:80
conti.phimsexsub.fun:22
conti.phimsexsub.fun:8080
conti.phimsexsub.fun:8880
conti.phimsexsub.fun:2052
conti.phimsexsub.fun:2082
conti.phimsexsub.fun:2086
conti.phimsexsub.fun:2095
conti.phimsexsub.fun:443
conti.phimsexsub.fun:2053
conti.phimsexsub.fun:2083
conti.phimsexsub.fun:2087
conti.phimsexsub.fun:2096
conti.phimsexsub.fun:8443

Mutex

i9LZTUfmRJ6i

Attributes

delay
0
install
true
install_file
pw5svgz.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/0x000c000000021467-8.dat	family_asyncrat
behavioral1/memory/2592-10-0x0000000002DA0000-0x0000000002DB0000-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-1-5-21-895009113-1202185046-1686627690-1000\Control Panel\International\Geo\Nation	5525fc01d41b523f1e127d166a107648376fd134b7f9637e6b42c92f7015c822.exe

Executes dropped EXE 2 IoCs

pid	Process
2592	pw5svgz.exe
4004	pw5svgz.exe

Outbound SSH connection to public host 2 TTPs 4 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	21	104.21.91.58:22	2592	pw5svgz.exe
SSH destination	25	172.67.167.121:22	2592	pw5svgz.exe
SSH destination	72	104.21.91.58:22	2592	pw5svgz.exe
SSH destination	75	172.67.167.121:22	2592	pw5svgz.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
3400	cmd.exe
2060	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	pw5svgz.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	pw5svgz.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	5525fc01d41b523f1e127d166a107648376fd134b7f9637e6b42c92f7015c822.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
1708	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
1608	schtasks.exe

Suspicious behavior: EnumeratesProcesses 21 IoCs

pid	Process
2448	5525fc01d41b523f1e127d166a107648376fd134b7f9637e6b42c92f7015c822.exe
2448	5525fc01d41b523f1e127d166a107648376fd134b7f9637e6b42c92f7015c822.exe
2448	5525fc01d41b523f1e127d166a107648376fd134b7f9637e6b42c92f7015c822.exe
2448	5525fc01d41b523f1e127d166a107648376fd134b7f9637e6b42c92f7015c822.exe
2448	5525fc01d41b523f1e127d166a107648376fd134b7f9637e6b42c92f7015c822.exe
2448	5525fc01d41b523f1e127d166a107648376fd134b7f9637e6b42c92f7015c822.exe
2448	5525fc01d41b523f1e127d166a107648376fd134b7f9637e6b42c92f7015c822.exe
2448	5525fc01d41b523f1e127d166a107648376fd134b7f9637e6b42c92f7015c822.exe
2448	5525fc01d41b523f1e127d166a107648376fd134b7f9637e6b42c92f7015c822.exe
2448	5525fc01d41b523f1e127d166a107648376fd134b7f9637e6b42c92f7015c822.exe
2448	5525fc01d41b523f1e127d166a107648376fd134b7f9637e6b42c92f7015c822.exe
2448	5525fc01d41b523f1e127d166a107648376fd134b7f9637e6b42c92f7015c822.exe
2448	5525fc01d41b523f1e127d166a107648376fd134b7f9637e6b42c92f7015c822.exe
2448	5525fc01d41b523f1e127d166a107648376fd134b7f9637e6b42c92f7015c822.exe
2448	5525fc01d41b523f1e127d166a107648376fd134b7f9637e6b42c92f7015c822.exe
2448	5525fc01d41b523f1e127d166a107648376fd134b7f9637e6b42c92f7015c822.exe
2448	5525fc01d41b523f1e127d166a107648376fd134b7f9637e6b42c92f7015c822.exe
2448	5525fc01d41b523f1e127d166a107648376fd134b7f9637e6b42c92f7015c822.exe
2448	5525fc01d41b523f1e127d166a107648376fd134b7f9637e6b42c92f7015c822.exe
2448	5525fc01d41b523f1e127d166a107648376fd134b7f9637e6b42c92f7015c822.exe
2448	5525fc01d41b523f1e127d166a107648376fd134b7f9637e6b42c92f7015c822.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2448	5525fc01d41b523f1e127d166a107648376fd134b7f9637e6b42c92f7015c822.exe
Token: SeDebugPrivilege	2592	pw5svgz.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 2448 wrote to memory of 3400	2448	5525fc01d41b523f1e127d166a107648376fd134b7f9637e6b42c92f7015c822.exe	89
PID 2448 wrote to memory of 2060	2448	5525fc01d41b523f1e127d166a107648376fd134b7f9637e6b42c92f7015c822.exe	91
PID 2060 wrote to memory of 1708	2060	cmd.exe	93
PID 3400 wrote to memory of 1608	3400	cmd.exe	94
PID 2060 wrote to memory of 4004	2060	cmd.exe	99

C:\Users\Admin\AppData\Local\Temp\5525fc01d41b523f1e127d166a107648376fd134b7f9637e6b42c92f7015c822.exe
"C:\Users\Admin\AppData\Local\Temp\5525fc01d41b523f1e127d166a107648376fd134b7f9637e6b42c92f7015c822.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2448
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "pw5svgz" /tr '"C:\Users\Admin\AppData\Roaming\pw5svgz.exe"' & exit
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3400
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "pw5svgz" /tr '"C:\Users\Admin\AppData\Roaming\pw5svgz.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:1608
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpED0B.tmp.bat""
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2060
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:1708
- - C:\Users\Admin\AppData\Roaming\pw5svgz.exe
    "C:\Users\Admin\AppData\Roaming\pw5svgz.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:4004

C:\Users\Admin\AppData\Roaming\pw5svgz.exe
"C:\Users\Admin\AppData\Roaming\pw5svgz.exe"
1⤵
- Executes dropped EXE
- Outbound SSH connection to public host
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:2592

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

tmpED0B.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmpED0B.tmp.bat
Size 151B
SHA256 fe78f27dd40653bceeac3e130b06d27b30389d989d9caad52c8ae904d63e37f0
MD5 cccae0df0a0537bb07ad8c47401d539b
SHA1 48c38c4842a228ef37b02d11fc645b17102fed83
SHA512 c95884bf18ea0e4df0613b13b39421232fc1fc2232b91569064373a6ebce1fcd435dc445aaf6d9a8171137910534db0b616f70ab5b982257de7ba37c65673de9
TLSH
T1BEC08C4251C6EA0F3D05141306FEE48C9162685D3E45AB00834440492280449E09A241
MD5 SHA1 SHA512 TLSH

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pw5svgz.exe

Path C:\Users\Admin\AppData\Roaming\pw5svgz.exe
Size 45KB
SHA256 5525fc01d41b523f1e127d166a107648376fd134b7f9637e6b42c92f7015c822
MD5 d9d1cb9eecd73386b9443805708b62a8
SHA1 6d64dbc32c27cb161c12245ecf230ce2f754ea69
SHA512 41add962d6ae1106d9344ccc34b634fc278a0b3cb586ebdcf65e61eb2dd82024b8ef7f5708d8e5feb47c5c96600dfba047f984f2e380475a1725b9872bd5f156
SSDEEP 768:5uSy6pTpwrSWWUE3/WImo2qNVcQSCBznqNLPI7zjbwgX3iO7POkt18s0BDZ0x:5uSy6pTpoo2Ec9UqC73b3XS4OkPVCd0x
TLSH
T131232B0037E9C12BF2BE4F7899F26105467AF6632603E54D2CC452DB5623FC69A426FE
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/2448-0-0x0000000000540000-0x0000000000552000-memory.dmp

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memory/2448-1-0x0000000004F60000-0x0000000004F70000-memory.dmp

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memory/2448-2-0x0000000004F70000-0x000000000500C000-memory.dmp

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memory/2592-10-0x0000000002DA0000-0x0000000002DB0000-memory.dmp

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memory/2592-13-0x0000000002DA0000-0x0000000002DB0000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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