asyncrat | dda58c25afa559174e6ca26a4112ab66c60974b82ff92435cce6f5dd795e7370

General

Target
dda58c25afa559174e6ca26a4112ab66c60974b82ff92435cce6f5dd795e7370.exe
Size 45KB
Sample260804-js3tzsam8w
SHA256 dda58c25afa559174e6ca26a4112ab66c60974b82ff92435cce6f5dd795e7370
MD5 2128b9732c54401dcb35410d1db94324
SHA1 b082676af9bfbd07cb614e6fb1b9762b105a9c1b
SHA512 1d3a7310093a1e42cf33184f991e09cdbf1d56a9f5136a3f7eb219d8a428d7515f33cc0b3acd4449e585ed25a353dbf350a372c087b5939b189e7f45ad7b959b
SSDEEP 768:vuogpT78XvEsWUOsRzqmo2qrYxJaxMwHuPIvzjb0gV3iUSA/V0BDZkx:vuogpT7I62zeN3v3bbVShA/Ydkx
TLSH
T1B7231A003BE8812AF2BE4FB499F26145467AF6633603D64D2CC451DB5623FC68A426FE
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
trisis.xcavengon.click:80
trisis.xcavengon.click:22
trisis.xcavengon.click:8080
trisis.xcavengon.click:8880
trisis.xcavengon.click:2052
trisis.xcavengon.click:2082
trisis.xcavengon.click:2086
trisis.xcavengon.click:2095
trisis.xcavengon.click:443
trisis.xcavengon.click:2053
trisis.xcavengon.click:2083
trisis.xcavengon.click:2087
trisis.xcavengon.click:2096
trisis.xcavengon.click:8443
iloveyou.xcavengon.click:80
iloveyou.xcavengon.click:22
iloveyou.xcavengon.click:8080
iloveyou.xcavengon.click:8880
iloveyou.xcavengon.click:2052
iloveyou.xcavengon.click:2082
iloveyou.xcavengon.click:2086
iloveyou.xcavengon.click:2095
iloveyou.xcavengon.click:443
iloveyou.xcavengon.click:2053
iloveyou.xcavengon.click:2083
iloveyou.xcavengon.click:2087
iloveyou.xcavengon.click:2096
iloveyou.xcavengon.click:8443
shamoon.xcavengon.click:80
shamoon.xcavengon.click:22
shamoon.xcavengon.click:8080
shamoon.xcavengon.click:8880
shamoon.xcavengon.click:2052
shamoon.xcavengon.click:2082
shamoon.xcavengon.click:2086
shamoon.xcavengon.click:2095
shamoon.xcavengon.click:443
shamoon.xcavengon.click:2053
shamoon.xcavengon.click:2083
shamoon.xcavengon.click:2087
shamoon.xcavengon.click:2096
shamoon.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

Mutex

4623eAOBOubN

Attributes

delay
0
install
true
install_file
5wkc9glj.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/0x00090000000244a1-8.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-1-5-21-540052884-2969440504-464782435-1000\Control Panel\International\Geo\Nation	dda58c25afa559174e6ca26a4112ab66c60974b82ff92435cce6f5dd795e7370.exe

Executes dropped EXE 2 IoCs

pid	Process
3596	5wkc9glj.exe
364	5wkc9glj.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
1812	cmd.exe
692	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	dda58c25afa559174e6ca26a4112ab66c60974b82ff92435cce6f5dd795e7370.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	5wkc9glj.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	5wkc9glj.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
4696	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
2656	schtasks.exe

Suspicious behavior: EnumeratesProcesses 21 IoCs

pid	Process
2364	dda58c25afa559174e6ca26a4112ab66c60974b82ff92435cce6f5dd795e7370.exe
2364	dda58c25afa559174e6ca26a4112ab66c60974b82ff92435cce6f5dd795e7370.exe
2364	dda58c25afa559174e6ca26a4112ab66c60974b82ff92435cce6f5dd795e7370.exe
2364	dda58c25afa559174e6ca26a4112ab66c60974b82ff92435cce6f5dd795e7370.exe
2364	dda58c25afa559174e6ca26a4112ab66c60974b82ff92435cce6f5dd795e7370.exe
2364	dda58c25afa559174e6ca26a4112ab66c60974b82ff92435cce6f5dd795e7370.exe
2364	dda58c25afa559174e6ca26a4112ab66c60974b82ff92435cce6f5dd795e7370.exe
2364	dda58c25afa559174e6ca26a4112ab66c60974b82ff92435cce6f5dd795e7370.exe
2364	dda58c25afa559174e6ca26a4112ab66c60974b82ff92435cce6f5dd795e7370.exe
2364	dda58c25afa559174e6ca26a4112ab66c60974b82ff92435cce6f5dd795e7370.exe
2364	dda58c25afa559174e6ca26a4112ab66c60974b82ff92435cce6f5dd795e7370.exe
2364	dda58c25afa559174e6ca26a4112ab66c60974b82ff92435cce6f5dd795e7370.exe
2364	dda58c25afa559174e6ca26a4112ab66c60974b82ff92435cce6f5dd795e7370.exe
2364	dda58c25afa559174e6ca26a4112ab66c60974b82ff92435cce6f5dd795e7370.exe
2364	dda58c25afa559174e6ca26a4112ab66c60974b82ff92435cce6f5dd795e7370.exe
2364	dda58c25afa559174e6ca26a4112ab66c60974b82ff92435cce6f5dd795e7370.exe
2364	dda58c25afa559174e6ca26a4112ab66c60974b82ff92435cce6f5dd795e7370.exe
2364	dda58c25afa559174e6ca26a4112ab66c60974b82ff92435cce6f5dd795e7370.exe
2364	dda58c25afa559174e6ca26a4112ab66c60974b82ff92435cce6f5dd795e7370.exe
2364	dda58c25afa559174e6ca26a4112ab66c60974b82ff92435cce6f5dd795e7370.exe
2364	dda58c25afa559174e6ca26a4112ab66c60974b82ff92435cce6f5dd795e7370.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2364	dda58c25afa559174e6ca26a4112ab66c60974b82ff92435cce6f5dd795e7370.exe
Token: SeDebugPrivilege	3596	5wkc9glj.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 2364 wrote to memory of 1812	2364	dda58c25afa559174e6ca26a4112ab66c60974b82ff92435cce6f5dd795e7370.exe	84
PID 2364 wrote to memory of 692	2364	dda58c25afa559174e6ca26a4112ab66c60974b82ff92435cce6f5dd795e7370.exe	86
PID 692 wrote to memory of 4696	692	cmd.exe	88
PID 1812 wrote to memory of 2656	1812	cmd.exe	89
PID 692 wrote to memory of 364	692	cmd.exe	92

C:\Users\Admin\AppData\Local\Temp\dda58c25afa559174e6ca26a4112ab66c60974b82ff92435cce6f5dd795e7370.exe
"C:\Users\Admin\AppData\Local\Temp\dda58c25afa559174e6ca26a4112ab66c60974b82ff92435cce6f5dd795e7370.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2364
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "5wkc9glj" /tr '"C:\Users\Admin\AppData\Roaming\5wkc9glj.exe"' & exit
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1812
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "5wkc9glj" /tr '"C:\Users\Admin\AppData\Roaming\5wkc9glj.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2656
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpDEB7.tmp.bat""
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:692
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:4696
- - C:\Users\Admin\AppData\Roaming\5wkc9glj.exe
    "C:\Users\Admin\AppData\Roaming\5wkc9glj.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:364

C:\Users\Admin\AppData\Roaming\5wkc9glj.exe
"C:\Users\Admin\AppData\Roaming\5wkc9glj.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:3596

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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tmpDEB7.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmpDEB7.tmp.bat
Size 152B
SHA256 8fd710cf6949afc1286822b628d7ef4820e9de13fc01c1b8f194bb59cf8ef51b
MD5 c06806ed8d2f5f44cb7754b1efb32931
SHA1 36ef34006ed9637ec7cd33b91018f0c3a8d6f908
SHA512 644dff1f6cb909db65572833245fec599c0d31f345562401173b61d9adad46c379d87e19649e55cd647d4907a6607178d3cc43c8b31a9d2e5ee1d74156eaef3d
TLSH
T144C08C4251C6AA2E2805245302BAA49EA672AC1D3E44AF00D304844D2680859E0E9745
MD5 SHA1 SHA512 TLSH

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5wkc9glj.exe

Path C:\Users\Admin\AppData\Roaming\5wkc9glj.exe
Size 45KB
SHA256 dda58c25afa559174e6ca26a4112ab66c60974b82ff92435cce6f5dd795e7370
MD5 2128b9732c54401dcb35410d1db94324
SHA1 b082676af9bfbd07cb614e6fb1b9762b105a9c1b
SHA512 1d3a7310093a1e42cf33184f991e09cdbf1d56a9f5136a3f7eb219d8a428d7515f33cc0b3acd4449e585ed25a353dbf350a372c087b5939b189e7f45ad7b959b
SSDEEP 768:vuogpT78XvEsWUOsRzqmo2qrYxJaxMwHuPIvzjb0gV3iUSA/V0BDZkx:vuogpT7I62zeN3v3bbVShA/Ydkx
TLSH
T1B7231A003BE8812AF2BE4FB499F26145467AF6633603D64D2CC451DB5623FC68A426FE
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/2364-0-0x0000000000790000-0x00000000007A2000-memory.dmp

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memory/2364-1-0x0000000005260000-0x0000000005270000-memory.dmp

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memory/2364-2-0x0000000005150000-0x00000000051EC000-memory.dmp

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memory/3596-10-0x00000000052B0000-0x00000000052C0000-memory.dmp

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memory/3596-13-0x00000000052B0000-0x00000000052C0000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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