asyncrat | 6f7f58981acf3e3afee3d824db3983daf9b482e914ca7a4ea3fa37e19218b980

General

Target
tmphv1a657n.exe
Size 45KB
Sample260602-lbhtlahx91
SHA256 6f7f58981acf3e3afee3d824db3983daf9b482e914ca7a4ea3fa37e19218b980
MD5 cc124b1080875d8bff7bc0c32ead85ea
SHA1 c62ce2d28513bb0079e5bf409186ffeda6e8daf0
SHA512 abd79590f84022574cb24645404801a84c7926f182df5ab854eff4830560b438782201b1026801f098e3c3125085482c729dd1db2ce5720fd38510cfa55bc694
SSDEEP 768:FugnNTjgkH7F7WUHF9pmo2q7IL5P02FUFd8Ykk8PIYzjbHgX3iHYkfVApZTXOFBS:FugnNTcIb2TLDmTBY3bAXSHApZodSx
TLSH
T13A232A0037E9812BF2BE4F7498F26245867AF6633603D5491CC451DB5B23BC69A43AFE
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

clique.br.com defense_evasion discovery execution asyncrat persistence rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

clique.br.com

C2

clique.br.com:80
clique.br.com:443
clique.br.com:3306
clique.br.com:8080
clique.br.com:8443
clique.br.com:20
clique.br.com:25

Mutex

UJYIav0PJFB3

Attributes

delay
3
install
true
install_file
da64.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
behavioral3/files/0x001e00000002b3f9-8.dat	family_asyncrat

Executes dropped EXE 2 IoCs

pid	Process
3044	da64.exe
3896	da64.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	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	da64.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	da64.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	tmphv1a657n.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
572	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
1692	schtasks.exe

Suspicious behavior: EnumeratesProcesses 19 IoCs

pid	Process
5024	tmphv1a657n.exe
5024	tmphv1a657n.exe
5024	tmphv1a657n.exe
5024	tmphv1a657n.exe
5024	tmphv1a657n.exe
5024	tmphv1a657n.exe
5024	tmphv1a657n.exe
5024	tmphv1a657n.exe
5024	tmphv1a657n.exe
5024	tmphv1a657n.exe
5024	tmphv1a657n.exe
5024	tmphv1a657n.exe
5024	tmphv1a657n.exe
5024	tmphv1a657n.exe
5024	tmphv1a657n.exe
5024	tmphv1a657n.exe
5024	tmphv1a657n.exe
5024	tmphv1a657n.exe
5024	tmphv1a657n.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	5024	tmphv1a657n.exe
Token: SeDebugPrivilege	3044	da64.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 5024 wrote to memory of 4520	5024	tmphv1a657n.exe	80
PID 5024 wrote to memory of 4000	5024	tmphv1a657n.exe	82
PID 4520 wrote to memory of 1692	4520	cmd.exe	84
PID 4000 wrote to memory of 572	4000	cmd.exe	85
PID 4000 wrote to memory of 3896	4000	cmd.exe	88

C:\Users\Admin\AppData\Local\Temp\tmphv1a657n.exe
"C:\Users\Admin\AppData\Local\Temp\tmphv1a657n.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:5024
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "da64" /tr '"C:\Users\Admin\AppData\Roaming\da64.exe"' & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4520
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "da64" /tr '"C:\Users\Admin\AppData\Roaming\da64.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:1692
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpA5EF.tmp.bat""
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4000
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:572
- - C:\Users\Admin\AppData\Roaming\da64.exe
    "C:\Users\Admin\AppData\Roaming\da64.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:3896

C:\Users\Admin\AppData\Roaming\da64.exe
"C:\Users\Admin\AppData\Roaming\da64.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:3044

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

System Information Discovery

1

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

tmpA5EF.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmpA5EF.tmp.bat
Size 148B
SHA256 75e9eb5b3542555402533d6ef1e5d7d18152918ad5a02e8cdf4e9bd938b6ab7c
MD5 2c23068f6970bcef67245cfa07dd7185
SHA1 59424c952a1d2148a7231aefbdfd00912e96106a
SHA512 16568b437de5abcc6f64b45c9089195942e842a34d42df4381190141d52c1118bc2433bbf93456889c7aae2534d088934ce8c60d7bfeca3070c43843ed991d43
TLSH
T13FC02B6261C5EB0E680D281302FAD88EE1737C293F80FB00C704441D12C085CF1D9343
MD5 SHA1 SHA512 TLSH

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da64.exe

Path C:\Users\Admin\AppData\Roaming\da64.exe
Size 45KB
SHA256 6f7f58981acf3e3afee3d824db3983daf9b482e914ca7a4ea3fa37e19218b980
MD5 cc124b1080875d8bff7bc0c32ead85ea
SHA1 c62ce2d28513bb0079e5bf409186ffeda6e8daf0
SHA512 abd79590f84022574cb24645404801a84c7926f182df5ab854eff4830560b438782201b1026801f098e3c3125085482c729dd1db2ce5720fd38510cfa55bc694
SSDEEP 768:FugnNTjgkH7F7WUHF9pmo2q7IL5P02FUFd8Ykk8PIYzjbHgX3iHYkfVApZTXOFBS:FugnNTcIb2TLDmTBY3bAXSHApZodSx
TLSH
T13A232A0037E9812BF2BE4F7498F26245867AF6633603D5491CC451DB5B23BC69A43AFE
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/5024-0-0x0000000000F40000-0x0000000000F52000-memory.dmp

Download

memory/5024-1-0x0000000005960000-0x0000000005970000-memory.dmp

Download

memory/5024-2-0x0000000005A10000-0x0000000005AAC000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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