asyncrat | 9706073ffb7e72d3f4b238e3512fd3bed0a1b01e2935c2e2c54142ea75cc9735

General

Target
tmpqd1qopk1.exe
Size 45KB
Sample260522-yxe12set8r
SHA256 9706073ffb7e72d3f4b238e3512fd3bed0a1b01e2935c2e2c54142ea75cc9735
MD5 4be78b4ffa3380360c1d8e68f2985d94
SHA1 a9bffbf2755e78acde7dae232267095a0e4daf2b
SHA512 c0ba8bffbfcd373d382cf81bd8d820e6ea1efb2eeab34a2dc74f66d3f86a14287d21739344ba6300f1384de95505737a750e63e4cabd5294939887b95023c869
SSDEEP 768:puNA/9T85LafWUzvSdmo2qIhRzMwnOPIZzjbogX3ikNaNG5CRAsg2xEqBDZ7x:puNA/9T8p72DA+3Z3b/XScuNms7xXd7x
TLSH
T1EC232A0037E9812BF2BE5B78A8F26145467AF2673603D68E1CC451DB5A23FC686427FD
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

gaisexmup.net:443
gaisexmup.net:80
gaisexmup.net:7797
gaisexmup.net:8707
gaisexmup.net:6620
www.gaisexmup.net:443
www.gaisexmup.net:80
www.gaisexmup.net:7797
www.gaisexmup.net:8707
www.gaisexmup.net:6620
gozi.gaisexmup.net:443
gozi.gaisexmup.net:80
gozi.gaisexmup.net:7797
gozi.gaisexmup.net:8707
gozi.gaisexmup.net:6620
ursnif.gaisexmup.net:443
ursnif.gaisexmup.net:80
ursnif.gaisexmup.net:7797
ursnif.gaisexmup.net:8707
ursnif.gaisexmup.net:6620

Mutex

cmS3ym5xZ8r1

Attributes

delay
0
install
true
install_file
kiqatf.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/0x001800000002b7ae-8.dat	family_asyncrat

Executes dropped EXE 2 IoCs

pid	Process
5772	kiqatf.exe
2316	kiqatf.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	cmd.exe
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	kiqatf.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	kiqatf.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	tmpqd1qopk1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
5116	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
5100	schtasks.exe

Suspicious behavior: EnumeratesProcesses 19 IoCs

pid	Process
5500	tmpqd1qopk1.exe
5500	tmpqd1qopk1.exe
5500	tmpqd1qopk1.exe
5500	tmpqd1qopk1.exe
5500	tmpqd1qopk1.exe
5500	tmpqd1qopk1.exe
5500	tmpqd1qopk1.exe
5500	tmpqd1qopk1.exe
5500	tmpqd1qopk1.exe
5500	tmpqd1qopk1.exe
5500	tmpqd1qopk1.exe
5500	tmpqd1qopk1.exe
5500	tmpqd1qopk1.exe
5500	tmpqd1qopk1.exe
5500	tmpqd1qopk1.exe
5500	tmpqd1qopk1.exe
5500	tmpqd1qopk1.exe
5500	tmpqd1qopk1.exe
5500	tmpqd1qopk1.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	5500	tmpqd1qopk1.exe
Token: SeDebugPrivilege	5772	kiqatf.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 5500 wrote to memory of 5052	5500	tmpqd1qopk1.exe	80
PID 5500 wrote to memory of 5244	5500	tmpqd1qopk1.exe	82
PID 5052 wrote to memory of 5100	5052	cmd.exe	84
PID 5244 wrote to memory of 5116	5244	cmd.exe	85
PID 5244 wrote to memory of 2316	5244	cmd.exe	88

C:\Users\Admin\AppData\Local\Temp\tmpqd1qopk1.exe
"C:\Users\Admin\AppData\Local\Temp\tmpqd1qopk1.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:5500
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "kiqatf" /tr '"C:\Users\Admin\AppData\Roaming\kiqatf.exe"' & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:5052
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "kiqatf" /tr '"C:\Users\Admin\AppData\Roaming\kiqatf.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:5100
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp848.tmp.bat""
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:5244
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:5116
- - C:\Users\Admin\AppData\Roaming\kiqatf.exe
    "C:\Users\Admin\AppData\Roaming\kiqatf.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:2316

C:\Users\Admin\AppData\Roaming\kiqatf.exe
"C:\Users\Admin\AppData\Roaming\kiqatf.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:5772

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

tmp848.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmp848.tmp.bat
Size 149B
SHA256 91ebe478b8766ee463e0cad7ac705c9509560cc7834b3ef3b83031d58531afaf
MD5 718f7e08cdf2475a30cd2fd9be9ca0fb
SHA1 ead60cce4038652d306a49aac50f33c701a3a47b
SHA512 5c915345403292963d41b2396e99d1649ef950f0dab1c19b7f7f46a0d62bfa06c91d9e24c34532797f6e18f8c81ab7345e85b179ac10f4e6bac2e81d6107b373
TLSH
T1E9C02B42A5C5EA0E2805683313FAD4DDA17B6E293F41FB10C705400D1780488F4D93C1
MD5 SHA1 SHA512 TLSH

Submit Download

kiqatf.exe

Path C:\Users\Admin\AppData\Roaming\kiqatf.exe
Size 45KB
SHA256 9706073ffb7e72d3f4b238e3512fd3bed0a1b01e2935c2e2c54142ea75cc9735
MD5 4be78b4ffa3380360c1d8e68f2985d94
SHA1 a9bffbf2755e78acde7dae232267095a0e4daf2b
SHA512 c0ba8bffbfcd373d382cf81bd8d820e6ea1efb2eeab34a2dc74f66d3f86a14287d21739344ba6300f1384de95505737a750e63e4cabd5294939887b95023c869
SSDEEP 768:puNA/9T85LafWUzvSdmo2qIhRzMwnOPIZzjbogX3ikNaNG5CRAsg2xEqBDZ7x:puNA/9T8p72DA+3Z3b/XScuNms7xXd7x
TLSH
T1EC232A0037E9812BF2BE5B78A8F26145467AF2673603D68E1CC451DB5A23FC686427FD
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/5500-0-0x0000000000690000-0x00000000006A2000-memory.dmp

Download

memory/5500-1-0x0000000002B60000-0x0000000002B70000-memory.dmp

Download

memory/5500-2-0x0000000005120000-0x00000000051BC000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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Downloads