asyncrat | 5331af599c128e2752f1c6a7937e5e2b148394cc8650bb192d6d0f9c17c85474

General

Target
5331af599c128e2752f1c6a7937e5e2b148394cc8650bb192d6d0f9c17c85474.exe
Size 45KB
Sample260804-ydmlsayelc
SHA256 5331af599c128e2752f1c6a7937e5e2b148394cc8650bb192d6d0f9c17c85474
MD5 23e6dff95de14235217b09cc7e3539cf
SHA1 55017abe495845fa7fa58af5c19b3aff185fd0e7
SHA512 430dce45bf6ed2c3f49eb48dd004234954f61ce1a3a279963d7bc2f7ee1edf1cccd7e4f0975fe74bfce89c9b0461d3cd5c18c8891608bc6bbbd4c9928302c020
SSDEEP 768:wuZ8pT1Uu4/cWUeT66mo2q1M0ewtDcy0oiZPIuzjbQgX3iiJO88SLjWuDBDZMx:wuZ8pT1tc2vwRPiWu3bXXSifmSdMx
TLSH
T1AF232A0037E8812BF2BE4F78A9F26241867AF5636603D64D1CC441DB5723BC69A43AFD
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

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

Mutex

nMyDnNKvmcIu

Attributes

delay
0
install
true
install_file
qwmg.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/0x0008000000024509-8.dat	family_asyncrat
behavioral1/memory/3436-10-0x00000000054A0000-0x00000000054B0000-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-1-5-21-2937465464-4167303362-2236413517-1000\Control Panel\International\Geo\Nation	5331af599c128e2752f1c6a7937e5e2b148394cc8650bb192d6d0f9c17c85474.exe

Executes dropped EXE 2 IoCs

pid	Process
3436	qwmg.exe
1528	qwmg.exe

Outbound SSH connection to public host 2 TTPs 6 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	66	104.21.32.163:22	3436	qwmg.exe
SSH destination	8	172.67.152.224:22	3436	qwmg.exe
SSH destination	20	104.21.32.163:22	3436	qwmg.exe
SSH destination	43	172.67.152.224:22	3436	qwmg.exe
SSH destination	50	104.21.32.163:22	3436	qwmg.exe
SSH destination	64	172.67.152.224:22	3436	qwmg.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
4528	cmd.exe
4620	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	5331af599c128e2752f1c6a7937e5e2b148394cc8650bb192d6d0f9c17c85474.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	qwmg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	qwmg.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
3836	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
3756	schtasks.exe

Suspicious behavior: EnumeratesProcesses 21 IoCs

pid	Process
812	5331af599c128e2752f1c6a7937e5e2b148394cc8650bb192d6d0f9c17c85474.exe
812	5331af599c128e2752f1c6a7937e5e2b148394cc8650bb192d6d0f9c17c85474.exe
812	5331af599c128e2752f1c6a7937e5e2b148394cc8650bb192d6d0f9c17c85474.exe
812	5331af599c128e2752f1c6a7937e5e2b148394cc8650bb192d6d0f9c17c85474.exe
812	5331af599c128e2752f1c6a7937e5e2b148394cc8650bb192d6d0f9c17c85474.exe
812	5331af599c128e2752f1c6a7937e5e2b148394cc8650bb192d6d0f9c17c85474.exe
812	5331af599c128e2752f1c6a7937e5e2b148394cc8650bb192d6d0f9c17c85474.exe
812	5331af599c128e2752f1c6a7937e5e2b148394cc8650bb192d6d0f9c17c85474.exe
812	5331af599c128e2752f1c6a7937e5e2b148394cc8650bb192d6d0f9c17c85474.exe
812	5331af599c128e2752f1c6a7937e5e2b148394cc8650bb192d6d0f9c17c85474.exe
812	5331af599c128e2752f1c6a7937e5e2b148394cc8650bb192d6d0f9c17c85474.exe
812	5331af599c128e2752f1c6a7937e5e2b148394cc8650bb192d6d0f9c17c85474.exe
812	5331af599c128e2752f1c6a7937e5e2b148394cc8650bb192d6d0f9c17c85474.exe
812	5331af599c128e2752f1c6a7937e5e2b148394cc8650bb192d6d0f9c17c85474.exe
812	5331af599c128e2752f1c6a7937e5e2b148394cc8650bb192d6d0f9c17c85474.exe
812	5331af599c128e2752f1c6a7937e5e2b148394cc8650bb192d6d0f9c17c85474.exe
812	5331af599c128e2752f1c6a7937e5e2b148394cc8650bb192d6d0f9c17c85474.exe
812	5331af599c128e2752f1c6a7937e5e2b148394cc8650bb192d6d0f9c17c85474.exe
812	5331af599c128e2752f1c6a7937e5e2b148394cc8650bb192d6d0f9c17c85474.exe
812	5331af599c128e2752f1c6a7937e5e2b148394cc8650bb192d6d0f9c17c85474.exe
812	5331af599c128e2752f1c6a7937e5e2b148394cc8650bb192d6d0f9c17c85474.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	812	5331af599c128e2752f1c6a7937e5e2b148394cc8650bb192d6d0f9c17c85474.exe
Token: SeDebugPrivilege	3436	qwmg.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 812 wrote to memory of 4528	812	5331af599c128e2752f1c6a7937e5e2b148394cc8650bb192d6d0f9c17c85474.exe	85
PID 812 wrote to memory of 4620	812	5331af599c128e2752f1c6a7937e5e2b148394cc8650bb192d6d0f9c17c85474.exe	87
PID 4620 wrote to memory of 3836	4620	cmd.exe	89
PID 4528 wrote to memory of 3756	4528	cmd.exe	90
PID 4620 wrote to memory of 1528	4620	cmd.exe	93

C:\Users\Admin\AppData\Local\Temp\5331af599c128e2752f1c6a7937e5e2b148394cc8650bb192d6d0f9c17c85474.exe
"C:\Users\Admin\AppData\Local\Temp\5331af599c128e2752f1c6a7937e5e2b148394cc8650bb192d6d0f9c17c85474.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:812
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "qwmg" /tr '"C:\Users\Admin\AppData\Roaming\qwmg.exe"' & exit
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4528
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "qwmg" /tr '"C:\Users\Admin\AppData\Roaming\qwmg.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:3756
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp5762.tmp.bat""
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4620
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:3836
- - C:\Users\Admin\AppData\Roaming\qwmg.exe
    "C:\Users\Admin\AppData\Roaming\qwmg.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:1528

C:\Users\Admin\AppData\Roaming\qwmg.exe
"C:\Users\Admin\AppData\Roaming\qwmg.exe"
1⤵
- Executes dropped EXE
- Outbound SSH connection to public host
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:3436

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

tmp5762.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmp5762.tmp.bat
Size 148B
SHA256 ff7ae8a4a084f7e5c585793d8fd3fcd643cb53efe52049ea43db22415b396915
MD5 256145ec1afa4b08fc2faffbfe419f79
SHA1 494d6e2b23e714d645ace445483d5e9441c98694
SHA512 1a38b14efe7268e918ff03c8a0432ca605d2b5bb2d2124443be72e695fe36e5b6b80a1ea1ba0f7d61dd32ed746e28ce82c66941b4e9c50d7526d3b5f9dd239fd
TLSH
T1AFC08C8291C5AA0E3805181306BAEA8CA166685A3E40AB508348400A2380498E099241
MD5 SHA1 SHA512 TLSH

Submit Download

qwmg.exe

Path C:\Users\Admin\AppData\Roaming\qwmg.exe
Size 45KB
SHA256 5331af599c128e2752f1c6a7937e5e2b148394cc8650bb192d6d0f9c17c85474
MD5 23e6dff95de14235217b09cc7e3539cf
SHA1 55017abe495845fa7fa58af5c19b3aff185fd0e7
SHA512 430dce45bf6ed2c3f49eb48dd004234954f61ce1a3a279963d7bc2f7ee1edf1cccd7e4f0975fe74bfce89c9b0461d3cd5c18c8891608bc6bbbd4c9928302c020
SSDEEP 768:wuZ8pT1Uu4/cWUeT66mo2q1M0ewtDcy0oiZPIuzjbQgX3iiJO88SLjWuDBDZMx:wuZ8pT1tc2vwRPiWu3bXXSifmSdMx
TLSH
T1AF232A0037E8812BF2BE4F78A9F26241867AF5636603D64D1CC441DB5723BC69A43AFD
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/812-0-0x00000000005D0000-0x00000000005E2000-memory.dmp

Download

memory/812-1-0x0000000005050000-0x0000000005060000-memory.dmp

Download

memory/812-2-0x0000000004F80000-0x000000000501C000-memory.dmp

Download

memory/3436-10-0x00000000054A0000-0x00000000054B0000-memory.dmp

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memory/3436-13-0x00000000054A0000-0x00000000054B0000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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