asyncrat | bd1736e672b3766e998c37fae9aaf8e381bc9300538e1533f97f88dc4c706817

General

Target

raokfhsjdgfb.exe
Size

47KB
MD5

750a92e39718ae101d63a8e6c11ba788
SHA1

8619dc026b09a14cd92c8521e700b702ffe25507
SHA256

bd1736e672b3766e998c37fae9aaf8e381bc9300538e1533f97f88dc4c706817
SHA512

a8c32a3adb01473f10023be9b9757d638ac3006f13ea9c5d4a664a9af0d0a4cebff33ca8dd537d87ba083cb99b4f2f187636d158ec2a1d96e4089354c5648d39
SSDEEP

768:kuY69T3kH1jWUvTqRmo2qbz7njNrPaPIlsR10bPHefQB1AL2UWBDZcx:kuY69T34y2gNPlskbP+fzL2Vdcx

Score

10^/10

asyncrat default discovery rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Default

C2

127.0.0.1:6606

127.0.0.1:7707

127.0.0.1:8808

weak-onions-tap.loca.lt:6606

weak-onions-tap.loca.lt:7707

weak-onions-tap.loca.lt:8808

Mutex

kal8dl52UUgv

Attributes

delay
3
install
true
install_file
roar.exe
install_folder
%AppData%

aes.plain

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
rat asyncrat
Asyncrat family
asyncrat

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral1/files/0x0007000000023c72-12.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-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	raokfhsjdgfb.exe

Executes dropped EXE 1 IoCs

pid	Process
4920	roar.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 6 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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	roar.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	raokfhsjdgfb.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
216	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
4572	schtasks.exe

Suspicious behavior: EnumeratesProcesses 23 IoCs

pid	Process
1456	raokfhsjdgfb.exe
1456	raokfhsjdgfb.exe
1456	raokfhsjdgfb.exe
1456	raokfhsjdgfb.exe
1456	raokfhsjdgfb.exe
1456	raokfhsjdgfb.exe
1456	raokfhsjdgfb.exe
1456	raokfhsjdgfb.exe
1456	raokfhsjdgfb.exe
1456	raokfhsjdgfb.exe
1456	raokfhsjdgfb.exe
1456	raokfhsjdgfb.exe
1456	raokfhsjdgfb.exe
1456	raokfhsjdgfb.exe
1456	raokfhsjdgfb.exe
1456	raokfhsjdgfb.exe
1456	raokfhsjdgfb.exe
1456	raokfhsjdgfb.exe
1456	raokfhsjdgfb.exe
1456	raokfhsjdgfb.exe
1456	raokfhsjdgfb.exe
1456	raokfhsjdgfb.exe
1456	raokfhsjdgfb.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1456	raokfhsjdgfb.exe
Token: SeDebugPrivilege	4920	roar.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 1456 wrote to memory of 5024	1456	raokfhsjdgfb.exe	88
PID 1456 wrote to memory of 5024	1456	raokfhsjdgfb.exe	88
PID 1456 wrote to memory of 5024	1456	raokfhsjdgfb.exe	88
PID 1456 wrote to memory of 2656	1456	raokfhsjdgfb.exe	90
PID 1456 wrote to memory of 2656	1456	raokfhsjdgfb.exe	90
PID 1456 wrote to memory of 2656	1456	raokfhsjdgfb.exe	90
PID 2656 wrote to memory of 216	2656	cmd.exe	92
PID 2656 wrote to memory of 216	2656	cmd.exe	92
PID 2656 wrote to memory of 216	2656	cmd.exe	92
PID 5024 wrote to memory of 4572	5024	cmd.exe	93
PID 5024 wrote to memory of 4572	5024	cmd.exe	93
PID 5024 wrote to memory of 4572	5024	cmd.exe	93
PID 2656 wrote to memory of 4920	2656	cmd.exe	97
PID 2656 wrote to memory of 4920	2656	cmd.exe	97
PID 2656 wrote to memory of 4920	2656	cmd.exe	97

C:\Users\Admin\AppData\Local\Temp\raokfhsjdgfb.exe
"C:\Users\Admin\AppData\Local\Temp\raokfhsjdgfb.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1456
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "roar" /tr '"C:\Users\Admin\AppData\Roaming\roar.exe"' & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:5024
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "roar" /tr '"C:\Users\Admin\AppData\Roaming\roar.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:4572
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpA9AD.tmp.bat""
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2656
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:216
- - C:\Users\Admin\AppData\Roaming\roar.exe
    "C:\Users\Admin\AppData\Roaming\roar.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    PID:4920

Network

MITRE ATT&CK Enterprise v15

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

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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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpA9AD.tmp.bat

Filesize
148B

MD5
f1c50b3a45dbd221ffa2fff760d518c9

SHA1
c2d80e4f6648571b83a54ddcb1aa535d5a81cb70

SHA256
84f46eaabd2664792b9bfbcb0e3e4725f1357e753d029259f16629b34693661d

SHA512
351bf95511ba8c5286d76a90154c827e5d18bce6e1c149c4e0399fe9190986becd017b2e3f8eab07116daa3624942d07223978135ab65903f35fac1703692182

Download Submit
C:\Users\Admin\AppData\Roaming\roar.exe

Filesize
47KB

MD5
750a92e39718ae101d63a8e6c11ba788

SHA1
8619dc026b09a14cd92c8521e700b702ffe25507

SHA256
bd1736e672b3766e998c37fae9aaf8e381bc9300538e1533f97f88dc4c706817

SHA512
a8c32a3adb01473f10023be9b9757d638ac3006f13ea9c5d4a664a9af0d0a4cebff33ca8dd537d87ba083cb99b4f2f187636d158ec2a1d96e4089354c5648d39

Download Submit
memory/1456-0-0x00000000747EE000-0x00000000747EF000-memory.dmp

Filesize
4KB

Download
memory/1456-1-0x00000000005F0000-0x0000000000602000-memory.dmp

Filesize
72KB

Download
memory/1456-2-0x00000000747E0000-0x0000000074F90000-memory.dmp

Filesize
7.7MB

Download
memory/1456-3-0x0000000004F80000-0x0000000004FE6000-memory.dmp

Filesize
408KB

Download
memory/1456-4-0x0000000005420000-0x00000000054BC000-memory.dmp

Filesize
624KB

Download
memory/1456-9-0x00000000747E0000-0x0000000074F90000-memory.dmp

Filesize
7.7MB

Download
memory/4920-14-0x0000000074730000-0x0000000074EE0000-memory.dmp

Filesize
7.7MB

Download
memory/4920-15-0x0000000074730000-0x0000000074EE0000-memory.dmp

Filesize
7.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads