asyncrat | d76e79944a31d97149ce2b73531a2ca5f67564a61173552ea4d62dc810d6300b

General

Target
d76e79944a31d97149ce2b73531a2ca5f67564a61173552ea4d62dc810d6300b.exe
Size 45KB
Sample260601-rd9b8aez3w
SHA256 d76e79944a31d97149ce2b73531a2ca5f67564a61173552ea4d62dc810d6300b
MD5 65b9cd4b8c537fccb492e72f9209a9c2
SHA1 0ed71af39f226884f7681e57245598c5ea2442a0
SHA512 86e1a8d37130938ff513d7514743b2ae5570a66f352e96706d64b2c52f3e443f65ed3112c34906ff74f7e95cfb8c14053603650e5cc850dd336d9b93adbc57b3
SSDEEP 768:cu7//5THrq+CWUoDuMmo2qFfseXusMkFX8vnPIMvzjbsgX32/agfaipBIsMKoJ6H:cu7n5TH2A2leB1FXiAMv3bjXGFf5pBJZ
TLSH
T1D1232A0037E8C12BF27F4BB899F261458A7AF5633603D94E2CC452974613FC69A526FE
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

galantclinic.com:443
galantclinic.com:80
galantclinic.com:7797
galantclinic.com:8707
galantclinic.com:6620
www.galantclinic.com:443
www.galantclinic.com:80
www.galantclinic.com:7797
www.galantclinic.com:8707
www.galantclinic.com:6620
klez.galantclinic.com:443
klez.galantclinic.com:80
klez.galantclinic.com:7797
klez.galantclinic.com:8707
klez.galantclinic.com:6620
hacker.galantclinic.com:443
hacker.galantclinic.com:80
hacker.galantclinic.com:7797
hacker.galantclinic.com:8707
hacker.galantclinic.com:6620
locky.galantclinic.com:443
locky.galantclinic.com:80
locky.galantclinic.com:7797
locky.galantclinic.com:8707
locky.galantclinic.com:6620
sobig.galantclinic.com:443
sobig.galantclinic.com:80
sobig.galantclinic.com:7797
sobig.galantclinic.com:8707
sobig.galantclinic.com:6620

Mutex

2VAzaCCptdrS

Attributes

delay
0
install
true
install_file
9v01t.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
behavioral2/files/0x001a00000002b5a7-8.dat	family_asyncrat

Executes dropped EXE 2 IoCs

pid	Process
5552	9v01t.exe
4712	9v01t.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	9v01t.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	9v01t.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	d76e79944a31d97149ce2b73531a2ca5f67564a61173552ea4d62dc810d6300b.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	schtasks.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
2956	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
2908	schtasks.exe

Suspicious behavior: EnumeratesProcesses 19 IoCs

pid	Process
3008	d76e79944a31d97149ce2b73531a2ca5f67564a61173552ea4d62dc810d6300b.exe
3008	d76e79944a31d97149ce2b73531a2ca5f67564a61173552ea4d62dc810d6300b.exe
3008	d76e79944a31d97149ce2b73531a2ca5f67564a61173552ea4d62dc810d6300b.exe
3008	d76e79944a31d97149ce2b73531a2ca5f67564a61173552ea4d62dc810d6300b.exe
3008	d76e79944a31d97149ce2b73531a2ca5f67564a61173552ea4d62dc810d6300b.exe
3008	d76e79944a31d97149ce2b73531a2ca5f67564a61173552ea4d62dc810d6300b.exe
3008	d76e79944a31d97149ce2b73531a2ca5f67564a61173552ea4d62dc810d6300b.exe
3008	d76e79944a31d97149ce2b73531a2ca5f67564a61173552ea4d62dc810d6300b.exe
3008	d76e79944a31d97149ce2b73531a2ca5f67564a61173552ea4d62dc810d6300b.exe
3008	d76e79944a31d97149ce2b73531a2ca5f67564a61173552ea4d62dc810d6300b.exe
3008	d76e79944a31d97149ce2b73531a2ca5f67564a61173552ea4d62dc810d6300b.exe
3008	d76e79944a31d97149ce2b73531a2ca5f67564a61173552ea4d62dc810d6300b.exe
3008	d76e79944a31d97149ce2b73531a2ca5f67564a61173552ea4d62dc810d6300b.exe
3008	d76e79944a31d97149ce2b73531a2ca5f67564a61173552ea4d62dc810d6300b.exe
3008	d76e79944a31d97149ce2b73531a2ca5f67564a61173552ea4d62dc810d6300b.exe
3008	d76e79944a31d97149ce2b73531a2ca5f67564a61173552ea4d62dc810d6300b.exe
3008	d76e79944a31d97149ce2b73531a2ca5f67564a61173552ea4d62dc810d6300b.exe
3008	d76e79944a31d97149ce2b73531a2ca5f67564a61173552ea4d62dc810d6300b.exe
3008	d76e79944a31d97149ce2b73531a2ca5f67564a61173552ea4d62dc810d6300b.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3008	d76e79944a31d97149ce2b73531a2ca5f67564a61173552ea4d62dc810d6300b.exe
Token: SeDebugPrivilege	5552	9v01t.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 3008 wrote to memory of 2448	3008	d76e79944a31d97149ce2b73531a2ca5f67564a61173552ea4d62dc810d6300b.exe	80
PID 3008 wrote to memory of 5208	3008	d76e79944a31d97149ce2b73531a2ca5f67564a61173552ea4d62dc810d6300b.exe	82
PID 2448 wrote to memory of 2908	2448	cmd.exe	84
PID 5208 wrote to memory of 2956	5208	cmd.exe	85
PID 5208 wrote to memory of 4712	5208	cmd.exe	88

C:\Users\Admin\AppData\Local\Temp\d76e79944a31d97149ce2b73531a2ca5f67564a61173552ea4d62dc810d6300b.exe
"C:\Users\Admin\AppData\Local\Temp\d76e79944a31d97149ce2b73531a2ca5f67564a61173552ea4d62dc810d6300b.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3008
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "9v01t" /tr '"C:\Users\Admin\AppData\Roaming\9v01t.exe"' & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2448
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "9v01t" /tr '"C:\Users\Admin\AppData\Roaming\9v01t.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2908
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp50CB.tmp.bat""
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:5208
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:2956
- - C:\Users\Admin\AppData\Roaming\9v01t.exe
    "C:\Users\Admin\AppData\Roaming\9v01t.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:4712

C:\Users\Admin\AppData\Roaming\9v01t.exe
"C:\Users\Admin\AppData\Roaming\9v01t.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:5552

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

tmp50CB.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmp50CB.tmp.bat
Size 149B
SHA256 3eacd5f2465a849ac6a3557fd48fed51b95ee172278525a1286e705879996dcf
MD5 acbb6e1f326bf9a20b2a0132a67df610
SHA1 51a540c7a7512c074a66483d44fa9b3b9ffb1f9e
SHA512 e4a8ee3e3e76e7c591b250d7e067f686b3c28400f1fdad12fb073c9c6d251fe12f342c8bb1f566784f8d680688d1c0ca799d1fb1101e0ce7a43d9eca115a3c38
TLSH
T1A3C02B4291C5EA0E290D182312FAD99DD1B2AC2A3F48BB40C744800F138244CF0D9345
MD5 SHA1 SHA512 TLSH

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9v01t.exe

Path C:\Users\Admin\AppData\Roaming\9v01t.exe
Size 45KB
SHA256 d76e79944a31d97149ce2b73531a2ca5f67564a61173552ea4d62dc810d6300b
MD5 65b9cd4b8c537fccb492e72f9209a9c2
SHA1 0ed71af39f226884f7681e57245598c5ea2442a0
SHA512 86e1a8d37130938ff513d7514743b2ae5570a66f352e96706d64b2c52f3e443f65ed3112c34906ff74f7e95cfb8c14053603650e5cc850dd336d9b93adbc57b3
SSDEEP 768:cu7//5THrq+CWUoDuMmo2qFfseXusMkFX8vnPIMvzjbsgX32/agfaipBIsMKoJ6H:cu7n5TH2A2leB1FXiAMv3bjXGFf5pBJZ
TLSH
T1D1232A0037E8C12BF27F4BB899F261458A7AF5633603D94E2CC452974613FC69A526FE
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/3008-0-0x0000000000220000-0x0000000000232000-memory.dmp

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memory/3008-1-0x0000000004D00000-0x0000000004D10000-memory.dmp

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memory/3008-2-0x0000000004D10000-0x0000000004DAC000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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