asyncrat | 782b6a53497c2fb003537412648e724d64a7d2738d70da5d71adcf6593a4a442

General

Target
782b6a53497c2fb003537412648e724d64a7d2738d70da5d71adcf6593a4a442.exe
Size 45KB
Sample260804-rtq6kscc49
SHA256 782b6a53497c2fb003537412648e724d64a7d2738d70da5d71adcf6593a4a442
MD5 3a1273a2c4aabd7ec06372f26fee117d
SHA1 5957958c15f6b801574e5c70bd5c850c9f88554a
SHA512 3f1028e322cadf0e83726112e9c91a93da6c789fb2d98f6cbfd7a2e535e99bbf2b3203a45d4cc050f22553ef32ad676747963c5c11bcf93861f517b475a6c23f
SSDEEP 768:cuq04JTLcsP8EWUmOTymo2qAO8V1RpPEcPIMzjbKgX3iDUDDX3MQO1+EjSPuUBs8:cuqNJTLr62e8VDZEhM3bdXSDmbMQOyPt
TLSH
T161232A0037E8822BF2BE5F78A8F26145867AF6637603D54A1CC4519B5713FC6CA426FE
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

xcavengon.click:80
xcavengon.click:22
xcavengon.click:8080
xcavengon.click:8880
xcavengon.click:2052
xcavengon.click:2082
xcavengon.click:2086
xcavengon.click:2095
xcavengon.click:443
xcavengon.click:2053
xcavengon.click:2083
xcavengon.click:2087
xcavengon.click:2096
xcavengon.click:8443
www.xcavengon.click:80
www.xcavengon.click:22
www.xcavengon.click:8080
www.xcavengon.click:8880
www.xcavengon.click:2052
www.xcavengon.click:2082
www.xcavengon.click:2086
www.xcavengon.click:2095
www.xcavengon.click:443
www.xcavengon.click:2053
www.xcavengon.click:2083
www.xcavengon.click:2087
www.xcavengon.click:2096
www.xcavengon.click:8443
mirai.xcavengon.click:80
mirai.xcavengon.click:22
mirai.xcavengon.click:8080
mirai.xcavengon.click:8880
mirai.xcavengon.click:2052
mirai.xcavengon.click:2082
mirai.xcavengon.click:2086
mirai.xcavengon.click:2095
mirai.xcavengon.click:443
mirai.xcavengon.click:2053
mirai.xcavengon.click:2083
mirai.xcavengon.click:2087
mirai.xcavengon.click:2096
mirai.xcavengon.click:8443
malware.xcavengon.click:80
malware.xcavengon.click:22
malware.xcavengon.click:8080
malware.xcavengon.click:8880
malware.xcavengon.click:2052
malware.xcavengon.click:2082
malware.xcavengon.click:2086
malware.xcavengon.click:2095
malware.xcavengon.click:443
malware.xcavengon.click:2053
malware.xcavengon.click:2083
malware.xcavengon.click:2087
malware.xcavengon.click:2096
malware.xcavengon.click:8443
hacker.xcavengon.click:80
hacker.xcavengon.click:22
hacker.xcavengon.click:8080
hacker.xcavengon.click:8880
hacker.xcavengon.click:2052
hacker.xcavengon.click:2082
hacker.xcavengon.click:2086
hacker.xcavengon.click:2095
hacker.xcavengon.click:443
hacker.xcavengon.click:2053
hacker.xcavengon.click:2083
hacker.xcavengon.click:2087
hacker.xcavengon.click:2096
hacker.xcavengon.click:8443
codered.xcavengon.click:80
codered.xcavengon.click:22
codered.xcavengon.click:8080
codered.xcavengon.click:8880
codered.xcavengon.click:2052
codered.xcavengon.click:2082
codered.xcavengon.click:2086
codered.xcavengon.click:2095
codered.xcavengon.click:443
codered.xcavengon.click:2053
codered.xcavengon.click:2083
codered.xcavengon.click:2087
codered.xcavengon.click:2096
codered.xcavengon.click:8443

Mutex

iGQ1WkUMkuzM

Attributes

delay
0
install
true
install_file
9qku.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/0x000800000002465a-8.dat	family_asyncrat
behavioral1/memory/1644-10-0x0000000005060000-0x0000000005070000-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-1-5-21-668679576-120646659-2289335452-1000\Control Panel\International\Geo\Nation	782b6a53497c2fb003537412648e724d64a7d2738d70da5d71adcf6593a4a442.exe

Executes dropped EXE 2 IoCs

pid	Process
1644	9qku.exe
2464	9qku.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
4316	cmd.exe
1932	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	9qku.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	782b6a53497c2fb003537412648e724d64a7d2738d70da5d71adcf6593a4a442.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	9qku.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
2376	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
988	schtasks.exe

Suspicious behavior: EnumeratesProcesses 21 IoCs

pid	Process
1896	782b6a53497c2fb003537412648e724d64a7d2738d70da5d71adcf6593a4a442.exe
1896	782b6a53497c2fb003537412648e724d64a7d2738d70da5d71adcf6593a4a442.exe
1896	782b6a53497c2fb003537412648e724d64a7d2738d70da5d71adcf6593a4a442.exe
1896	782b6a53497c2fb003537412648e724d64a7d2738d70da5d71adcf6593a4a442.exe
1896	782b6a53497c2fb003537412648e724d64a7d2738d70da5d71adcf6593a4a442.exe
1896	782b6a53497c2fb003537412648e724d64a7d2738d70da5d71adcf6593a4a442.exe
1896	782b6a53497c2fb003537412648e724d64a7d2738d70da5d71adcf6593a4a442.exe
1896	782b6a53497c2fb003537412648e724d64a7d2738d70da5d71adcf6593a4a442.exe
1896	782b6a53497c2fb003537412648e724d64a7d2738d70da5d71adcf6593a4a442.exe
1896	782b6a53497c2fb003537412648e724d64a7d2738d70da5d71adcf6593a4a442.exe
1896	782b6a53497c2fb003537412648e724d64a7d2738d70da5d71adcf6593a4a442.exe
1896	782b6a53497c2fb003537412648e724d64a7d2738d70da5d71adcf6593a4a442.exe
1896	782b6a53497c2fb003537412648e724d64a7d2738d70da5d71adcf6593a4a442.exe
1896	782b6a53497c2fb003537412648e724d64a7d2738d70da5d71adcf6593a4a442.exe
1896	782b6a53497c2fb003537412648e724d64a7d2738d70da5d71adcf6593a4a442.exe
1896	782b6a53497c2fb003537412648e724d64a7d2738d70da5d71adcf6593a4a442.exe
1896	782b6a53497c2fb003537412648e724d64a7d2738d70da5d71adcf6593a4a442.exe
1896	782b6a53497c2fb003537412648e724d64a7d2738d70da5d71adcf6593a4a442.exe
1896	782b6a53497c2fb003537412648e724d64a7d2738d70da5d71adcf6593a4a442.exe
1896	782b6a53497c2fb003537412648e724d64a7d2738d70da5d71adcf6593a4a442.exe
1896	782b6a53497c2fb003537412648e724d64a7d2738d70da5d71adcf6593a4a442.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1896	782b6a53497c2fb003537412648e724d64a7d2738d70da5d71adcf6593a4a442.exe
Token: SeDebugPrivilege	1644	9qku.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 1896 wrote to memory of 4316	1896	782b6a53497c2fb003537412648e724d64a7d2738d70da5d71adcf6593a4a442.exe	86
PID 1896 wrote to memory of 1932	1896	782b6a53497c2fb003537412648e724d64a7d2738d70da5d71adcf6593a4a442.exe	88
PID 1932 wrote to memory of 2376	1932	cmd.exe	90
PID 4316 wrote to memory of 988	4316	cmd.exe	91
PID 1932 wrote to memory of 2464	1932	cmd.exe	94

C:\Users\Admin\AppData\Local\Temp\782b6a53497c2fb003537412648e724d64a7d2738d70da5d71adcf6593a4a442.exe
"C:\Users\Admin\AppData\Local\Temp\782b6a53497c2fb003537412648e724d64a7d2738d70da5d71adcf6593a4a442.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1896
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "9qku" /tr '"C:\Users\Admin\AppData\Roaming\9qku.exe"' & exit
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4316
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "9qku" /tr '"C:\Users\Admin\AppData\Roaming\9qku.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:988
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpF047.tmp.bat""
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1932
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:2376
- - C:\Users\Admin\AppData\Roaming\9qku.exe
    "C:\Users\Admin\AppData\Roaming\9qku.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:2464

C:\Users\Admin\AppData\Roaming\9qku.exe
"C:\Users\Admin\AppData\Roaming\9qku.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:1644

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

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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tmpF047.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmpF047.tmp.bat
Size 148B
SHA256 0e57b410fd8f96f0109cca77d4aaf9f565bfd24b15fca0512b710e8cb7753471
MD5 8895fd404d8ebd03060952784e441f65
SHA1 23b8369532137e0e5b750b806cbc5d23c5a52632
SHA512 9364bfb6ce1fc5fbe73477091f97a5a30d082d5018aa7349f151cbe32a777c12870bc774b2002f5bafefb581eadf0c0528980a29150481cd57b04d0809c3792d
TLSH
T1A6C02B8761C6FA0E2C0D183312FAD48D91726C593F40FB00D304840D5380449F0DA342
MD5 SHA1 SHA512 TLSH

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9qku.exe

Path C:\Users\Admin\AppData\Roaming\9qku.exe
Size 45KB
SHA256 782b6a53497c2fb003537412648e724d64a7d2738d70da5d71adcf6593a4a442
MD5 3a1273a2c4aabd7ec06372f26fee117d
SHA1 5957958c15f6b801574e5c70bd5c850c9f88554a
SHA512 3f1028e322cadf0e83726112e9c91a93da6c789fb2d98f6cbfd7a2e535e99bbf2b3203a45d4cc050f22553ef32ad676747963c5c11bcf93861f517b475a6c23f
SSDEEP 768:cuq04JTLcsP8EWUmOTymo2qAO8V1RpPEcPIMzjbKgX3iDUDDX3MQO1+EjSPuUBs8:cuqNJTLr62e8VDZEhM3bdXSDmbMQOyPt
TLSH
T161232A0037E8822BF2BE5F78A8F26145867AF6637603D54A1CC4519B5713FC6CA426FE
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/1644-10-0x0000000005060000-0x0000000005070000-memory.dmp

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memory/1644-13-0x0000000005060000-0x0000000005070000-memory.dmp

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memory/1896-0-0x0000000000160000-0x0000000000172000-memory.dmp

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memory/1896-1-0x00000000049B0000-0x00000000049C0000-memory.dmp

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memory/1896-2-0x0000000004A60000-0x0000000004AFC000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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