asyncrat | 703afb64a80a14a44f0648e37f4b3bc18c67f04daca78620a9262076e161d933

General

Target
703afb64a80a14a44f0648e37f4b3bc18c67f04daca78620a9262076e161d933.exe
Size 45KB
Sample260601-s21knahv21
SHA256 703afb64a80a14a44f0648e37f4b3bc18c67f04daca78620a9262076e161d933
MD5 9eefd6c3c76dffcbd2cb251c5dcd61f2
SHA1 f5baf40b138f3ac38c2846ce16a460d051afee73
SHA512 a980536e62b837a79c3f5dfb4cd81e6ef29bcec6b77209e667318dee42916f43c0ab9583b129fc72302c5afe3674ec973d9fd9d6c2fd11a70dc8f51daff08c79
SSDEEP 768:JuNz1TtADT1WUVoJPmo2q4FeeXKSocbbbQtN8/nPI6kzjb3gX3iBbrPSZhGpV+Bf:JuNz1Tts428eH2tNKA6k3bQXSt9VQdbx
TLSH
T1C9231C003BE8812BF2BF4F78A9F261454A7AF2637503D59A1CC451975713FC68A42AFE
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

default defense_evasion discovery execution asyncrat persistence rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Default

C2

xnxx3.com:443
xnxx3.com:80
xnxx3.com:7797
xnxx3.com:8707
xnxx3.com:6620
www.xnxx3.com:443
www.xnxx3.com:80
www.xnxx3.com:7797
www.xnxx3.com:8707
www.xnxx3.com:6620
azorult.xnxx3.com:443
azorult.xnxx3.com:80
azorult.xnxx3.com:7797
azorult.xnxx3.com:8707
azorult.xnxx3.com:6620
zbot.xnxx3.com:443
zbot.xnxx3.com:80
zbot.xnxx3.com:7797
zbot.xnxx3.com:8707
zbot.xnxx3.com:6620
qakbot.xnxx3.com:443
qakbot.xnxx3.com:80
qakbot.xnxx3.com:7797
qakbot.xnxx3.com:8707
qakbot.xnxx3.com:6620
locky.xnxx3.com:443
locky.xnxx3.com:80
locky.xnxx3.com:7797
locky.xnxx3.com:8707
locky.xnxx3.com:6620

Mutex

JVCWTcPaO4kF

Attributes

delay
0
install
true
install_file
69sox.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/0x000b0000000242ff-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-1-5-21-1074038928-2032447174-945360078-1000\Control Panel\International\Geo\Nation	703afb64a80a14a44f0648e37f4b3bc18c67f04daca78620a9262076e161d933.exe

Executes dropped EXE 2 IoCs

pid	Process
3508	69sox.exe
3600	69sox.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

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	timeout.exe
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	69sox.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	69sox.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	703afb64a80a14a44f0648e37f4b3bc18c67f04daca78620a9262076e161d933.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
2068	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
4880	schtasks.exe

Suspicious behavior: EnumeratesProcesses 21 IoCs

pid	Process
4044	703afb64a80a14a44f0648e37f4b3bc18c67f04daca78620a9262076e161d933.exe
4044	703afb64a80a14a44f0648e37f4b3bc18c67f04daca78620a9262076e161d933.exe
4044	703afb64a80a14a44f0648e37f4b3bc18c67f04daca78620a9262076e161d933.exe
4044	703afb64a80a14a44f0648e37f4b3bc18c67f04daca78620a9262076e161d933.exe
4044	703afb64a80a14a44f0648e37f4b3bc18c67f04daca78620a9262076e161d933.exe
4044	703afb64a80a14a44f0648e37f4b3bc18c67f04daca78620a9262076e161d933.exe
4044	703afb64a80a14a44f0648e37f4b3bc18c67f04daca78620a9262076e161d933.exe
4044	703afb64a80a14a44f0648e37f4b3bc18c67f04daca78620a9262076e161d933.exe
4044	703afb64a80a14a44f0648e37f4b3bc18c67f04daca78620a9262076e161d933.exe
4044	703afb64a80a14a44f0648e37f4b3bc18c67f04daca78620a9262076e161d933.exe
4044	703afb64a80a14a44f0648e37f4b3bc18c67f04daca78620a9262076e161d933.exe
4044	703afb64a80a14a44f0648e37f4b3bc18c67f04daca78620a9262076e161d933.exe
4044	703afb64a80a14a44f0648e37f4b3bc18c67f04daca78620a9262076e161d933.exe
4044	703afb64a80a14a44f0648e37f4b3bc18c67f04daca78620a9262076e161d933.exe
4044	703afb64a80a14a44f0648e37f4b3bc18c67f04daca78620a9262076e161d933.exe
4044	703afb64a80a14a44f0648e37f4b3bc18c67f04daca78620a9262076e161d933.exe
4044	703afb64a80a14a44f0648e37f4b3bc18c67f04daca78620a9262076e161d933.exe
4044	703afb64a80a14a44f0648e37f4b3bc18c67f04daca78620a9262076e161d933.exe
4044	703afb64a80a14a44f0648e37f4b3bc18c67f04daca78620a9262076e161d933.exe
4044	703afb64a80a14a44f0648e37f4b3bc18c67f04daca78620a9262076e161d933.exe
4044	703afb64a80a14a44f0648e37f4b3bc18c67f04daca78620a9262076e161d933.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4044	703afb64a80a14a44f0648e37f4b3bc18c67f04daca78620a9262076e161d933.exe
Token: SeDebugPrivilege	3508	69sox.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 4044 wrote to memory of 4672	4044	703afb64a80a14a44f0648e37f4b3bc18c67f04daca78620a9262076e161d933.exe	89
PID 4044 wrote to memory of 3688	4044	703afb64a80a14a44f0648e37f4b3bc18c67f04daca78620a9262076e161d933.exe	91
PID 3688 wrote to memory of 2068	3688	cmd.exe	93
PID 4672 wrote to memory of 4880	4672	cmd.exe	94
PID 3688 wrote to memory of 3600	3688	cmd.exe	97

C:\Users\Admin\AppData\Local\Temp\703afb64a80a14a44f0648e37f4b3bc18c67f04daca78620a9262076e161d933.exe
"C:\Users\Admin\AppData\Local\Temp\703afb64a80a14a44f0648e37f4b3bc18c67f04daca78620a9262076e161d933.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4044
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "69sox" /tr '"C:\Users\Admin\AppData\Roaming\69sox.exe"' & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4672
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "69sox" /tr '"C:\Users\Admin\AppData\Roaming\69sox.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:4880
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp6CAF.tmp.bat""
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3688
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:2068
- - C:\Users\Admin\AppData\Roaming\69sox.exe
    "C:\Users\Admin\AppData\Roaming\69sox.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:3600

C:\Users\Admin\AppData\Roaming\69sox.exe
"C:\Users\Admin\AppData\Roaming\69sox.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:3508

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

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

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

tmp6CAF.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmp6CAF.tmp.bat
Size 149B
SHA256 d3c09b694fefae9866a811f5f5adb09e33c0a83b2d9ad1396c90b976927cabb5
MD5 175199d1e827dcc8f508da8c93161988
SHA1 68998370ec0b28a62b167a73ae57fdcd49bca3ef
SHA512 7fe240d803c4bb48687434e7474a43cef1fc46ee00989db14ef47092aff0cf1f287444dec330132557f3f7bc5bd40b5b5ef053abbf0ef9f50ca35620e0d5bf9c
TLSH
T10EC08C8251C6AA0E2A0D541302FAD6DCA17668193E81AB20930A44591280468F099241
MD5 SHA1 SHA512 TLSH

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69sox.exe

Path C:\Users\Admin\AppData\Roaming\69sox.exe
Size 45KB
SHA256 703afb64a80a14a44f0648e37f4b3bc18c67f04daca78620a9262076e161d933
MD5 9eefd6c3c76dffcbd2cb251c5dcd61f2
SHA1 f5baf40b138f3ac38c2846ce16a460d051afee73
SHA512 a980536e62b837a79c3f5dfb4cd81e6ef29bcec6b77209e667318dee42916f43c0ab9583b129fc72302c5afe3674ec973d9fd9d6c2fd11a70dc8f51daff08c79
SSDEEP 768:JuNz1TtADT1WUVoJPmo2q4FeeXKSocbbbQtN8/nPI6kzjb3gX3iBbrPSZhGpV+Bf:JuNz1Tts428eH2tNKA6k3bQXSt9VQdbx
TLSH
T1C9231C003BE8812BF2BF4F78A9F261454A7AF2637503D59A1CC451975713FC68A42AFE
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/3508-10-0x00000000057C0000-0x00000000057D0000-memory.dmp

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memory/3508-13-0x00000000057C0000-0x00000000057D0000-memory.dmp

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memory/4044-0-0x00000000004F0000-0x0000000000502000-memory.dmp

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memory/4044-1-0x0000000004EE0000-0x0000000004EF0000-memory.dmp

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memory/4044-2-0x0000000004D90000-0x0000000004E2C000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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