asyncrat | dccc69c7db9da2b81ed72de132d2aae16a1896eba1a20183acab96937dbeb554

General

Target
dccc69c7db9da2b81ed72de132d2aae16a1896eba1a20183acab96937dbeb554.exe
Size 45KB
Sample260717-sp6k5sas21
SHA256 dccc69c7db9da2b81ed72de132d2aae16a1896eba1a20183acab96937dbeb554
MD5 2c593b5a56b2f2ab39bb867bb0959026
SHA1 eb8ba720ac6702700a64d0e4135d1a793997bcee
SHA512 76a532c42750cac6de129daf89f44e8130c8704804905a0f97d26aef950ab1ca4e20c2efbf0fc6b173ad49b1b113a40dbd383b0d5dcb3b999fc6979b3ce5c9e9
SSDEEP 768:EulCJTHESwgWUK3aGmo2q95dR3aI6OPIuzjbZgi3iO4hxc8nBDZsx:EulCJTHl42mjqb3u3b2iSvhxRdsx
TLSH
T15A233B003BE8812BF2BE4FB899F26145467AF2633A03D64E1CC451DB5713FC69A426ED
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

sexnga.store:80
sexnga.store:22
sexnga.store:8080
sexnga.store:8880
sexnga.store:2052
sexnga.store:2082
sexnga.store:2086
sexnga.store:2095
sexnga.store:443
sexnga.store:2053
sexnga.store:2083
sexnga.store:2087
sexnga.store:2096
sexnga.store:8443
www.sexnga.store:80
www.sexnga.store:22
www.sexnga.store:8080
www.sexnga.store:8880
www.sexnga.store:2052
www.sexnga.store:2082
www.sexnga.store:2086
www.sexnga.store:2095
www.sexnga.store:443
www.sexnga.store:2053
www.sexnga.store:2083
www.sexnga.store:2087
www.sexnga.store:2096
www.sexnga.store:8443
malware.sexnga.store:80
malware.sexnga.store:22
malware.sexnga.store:8080
malware.sexnga.store:8880
malware.sexnga.store:2052
malware.sexnga.store:2082
malware.sexnga.store:2086
malware.sexnga.store:2095
malware.sexnga.store:443
malware.sexnga.store:2053
malware.sexnga.store:2083
malware.sexnga.store:2087
malware.sexnga.store:2096
malware.sexnga.store:8443
iloveyou.sexnga.store:80
iloveyou.sexnga.store:22
iloveyou.sexnga.store:8080
iloveyou.sexnga.store:8880
iloveyou.sexnga.store:2052
iloveyou.sexnga.store:2082
iloveyou.sexnga.store:2086
iloveyou.sexnga.store:2095
iloveyou.sexnga.store:443
iloveyou.sexnga.store:2053
iloveyou.sexnga.store:2083
iloveyou.sexnga.store:2087
iloveyou.sexnga.store:2096
iloveyou.sexnga.store:8443
zbot.sexnga.store:80
zbot.sexnga.store:22
zbot.sexnga.store:8080
zbot.sexnga.store:8880
zbot.sexnga.store:2052
zbot.sexnga.store:2082
zbot.sexnga.store:2086
zbot.sexnga.store:2095
zbot.sexnga.store:443
zbot.sexnga.store:2053
zbot.sexnga.store:2083
zbot.sexnga.store:2087
zbot.sexnga.store:2096
zbot.sexnga.store:8443
clop.sexnga.store:80
clop.sexnga.store:22
clop.sexnga.store:8080
clop.sexnga.store:8880
clop.sexnga.store:2052
clop.sexnga.store:2082
clop.sexnga.store:2086
clop.sexnga.store:2095
clop.sexnga.store:443
clop.sexnga.store:2053
clop.sexnga.store:2083
clop.sexnga.store:2087
clop.sexnga.store:2096
clop.sexnga.store:8443

Mutex

kpm4p5eGXHUE

Attributes

delay
0
install
true
install_file
exqkzh.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/0x0008000000024433-8.dat	family_asyncrat
behavioral1/memory/3928-10-0x00000000051D0000-0x00000000051E0000-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-1-5-21-204488895-2999877624-296153668-1000\Control Panel\International\Geo\Nation	dccc69c7db9da2b81ed72de132d2aae16a1896eba1a20183acab96937dbeb554.exe

Executes dropped EXE 2 IoCs

pid	Process
3928	exqkzh.exe
2568	exqkzh.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	exqkzh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	exqkzh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	dccc69c7db9da2b81ed72de132d2aae16a1896eba1a20183acab96937dbeb554.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

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
1900	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
1036	schtasks.exe

Suspicious behavior: EnumeratesProcesses 23 IoCs

pid	Process
3804	dccc69c7db9da2b81ed72de132d2aae16a1896eba1a20183acab96937dbeb554.exe
3804	dccc69c7db9da2b81ed72de132d2aae16a1896eba1a20183acab96937dbeb554.exe
3804	dccc69c7db9da2b81ed72de132d2aae16a1896eba1a20183acab96937dbeb554.exe
3804	dccc69c7db9da2b81ed72de132d2aae16a1896eba1a20183acab96937dbeb554.exe
3804	dccc69c7db9da2b81ed72de132d2aae16a1896eba1a20183acab96937dbeb554.exe
3804	dccc69c7db9da2b81ed72de132d2aae16a1896eba1a20183acab96937dbeb554.exe
3804	dccc69c7db9da2b81ed72de132d2aae16a1896eba1a20183acab96937dbeb554.exe
3804	dccc69c7db9da2b81ed72de132d2aae16a1896eba1a20183acab96937dbeb554.exe
3804	dccc69c7db9da2b81ed72de132d2aae16a1896eba1a20183acab96937dbeb554.exe
3804	dccc69c7db9da2b81ed72de132d2aae16a1896eba1a20183acab96937dbeb554.exe
3804	dccc69c7db9da2b81ed72de132d2aae16a1896eba1a20183acab96937dbeb554.exe
3804	dccc69c7db9da2b81ed72de132d2aae16a1896eba1a20183acab96937dbeb554.exe
3804	dccc69c7db9da2b81ed72de132d2aae16a1896eba1a20183acab96937dbeb554.exe
3804	dccc69c7db9da2b81ed72de132d2aae16a1896eba1a20183acab96937dbeb554.exe
3804	dccc69c7db9da2b81ed72de132d2aae16a1896eba1a20183acab96937dbeb554.exe
3804	dccc69c7db9da2b81ed72de132d2aae16a1896eba1a20183acab96937dbeb554.exe
3804	dccc69c7db9da2b81ed72de132d2aae16a1896eba1a20183acab96937dbeb554.exe
3804	dccc69c7db9da2b81ed72de132d2aae16a1896eba1a20183acab96937dbeb554.exe
3804	dccc69c7db9da2b81ed72de132d2aae16a1896eba1a20183acab96937dbeb554.exe
3804	dccc69c7db9da2b81ed72de132d2aae16a1896eba1a20183acab96937dbeb554.exe
3804	dccc69c7db9da2b81ed72de132d2aae16a1896eba1a20183acab96937dbeb554.exe
3804	dccc69c7db9da2b81ed72de132d2aae16a1896eba1a20183acab96937dbeb554.exe
3804	dccc69c7db9da2b81ed72de132d2aae16a1896eba1a20183acab96937dbeb554.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3804	dccc69c7db9da2b81ed72de132d2aae16a1896eba1a20183acab96937dbeb554.exe
Token: SeDebugPrivilege	3928	exqkzh.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 3804 wrote to memory of 4980	3804	dccc69c7db9da2b81ed72de132d2aae16a1896eba1a20183acab96937dbeb554.exe	87
PID 3804 wrote to memory of 4468	3804	dccc69c7db9da2b81ed72de132d2aae16a1896eba1a20183acab96937dbeb554.exe	89
PID 4468 wrote to memory of 1900	4468	cmd.exe	91
PID 4980 wrote to memory of 1036	4980	cmd.exe	92
PID 4468 wrote to memory of 2568	4468	cmd.exe	96

C:\Users\Admin\AppData\Local\Temp\dccc69c7db9da2b81ed72de132d2aae16a1896eba1a20183acab96937dbeb554.exe
"C:\Users\Admin\AppData\Local\Temp\dccc69c7db9da2b81ed72de132d2aae16a1896eba1a20183acab96937dbeb554.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3804
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "exqkzh" /tr '"C:\Users\Admin\AppData\Roaming\exqkzh.exe"' & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4980
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "exqkzh" /tr '"C:\Users\Admin\AppData\Roaming\exqkzh.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:1036
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp8335.tmp.bat""
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4468
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:1900
- - C:\Users\Admin\AppData\Roaming\exqkzh.exe
    "C:\Users\Admin\AppData\Roaming\exqkzh.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:2568

C:\Users\Admin\AppData\Roaming\exqkzh.exe
"C:\Users\Admin\AppData\Roaming\exqkzh.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:3928

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

tmp8335.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmp8335.tmp.bat
Size 150B
SHA256 88c73bcfbe38c1965bfa72419ee0a019b62ceb0e77c29c612e2adc663d7b4c67
MD5 db57915f7e8ef26e9754a6037a1ca60b
SHA1 75942c4dc82b2e74681696111036ea346fac65d5
SHA512 ff639da863e8d546fea7678dd23c5dbd5d3378016730b5bcafe7e5d89f1a203d7a66f2f21fbf01bc8e378a15f4adcb32d42bb73d51fb42b46d94f3c1f47b6c5e
TLSH
T102C02B4251C6EA0E6C05943307FBE58C91BBAC3A3F80BB00C308401E2A804C8F0DD342
MD5 SHA1 SHA512 TLSH

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exqkzh.exe

Path C:\Users\Admin\AppData\Roaming\exqkzh.exe
Size 45KB
SHA256 dccc69c7db9da2b81ed72de132d2aae16a1896eba1a20183acab96937dbeb554
MD5 2c593b5a56b2f2ab39bb867bb0959026
SHA1 eb8ba720ac6702700a64d0e4135d1a793997bcee
SHA512 76a532c42750cac6de129daf89f44e8130c8704804905a0f97d26aef950ab1ca4e20c2efbf0fc6b173ad49b1b113a40dbd383b0d5dcb3b999fc6979b3ce5c9e9
SSDEEP 768:EulCJTHESwgWUK3aGmo2q95dR3aI6OPIuzjbZgi3iO4hxc8nBDZsx:EulCJTHl42mjqb3u3b2iSvhxRdsx
TLSH
T15A233B003BE8812BF2BE4FB899F26145467AF2633A03D64E1CC451DB5713FC69A426ED
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/3804-0-0x00000000006E0000-0x00000000006F2000-memory.dmp

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memory/3804-1-0x00000000051A0000-0x00000000051B0000-memory.dmp

Download

memory/3804-2-0x00000000050A0000-0x000000000513C000-memory.dmp

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memory/3928-10-0x00000000051D0000-0x00000000051E0000-memory.dmp

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memory/3928-13-0x00000000051D0000-0x00000000051E0000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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