asyncrat | 934cccb532798cb588464f4c8e88ac90974a5493def9abf7e4ef92f65bea43e9

General

Target
934cccb532798cb588464f4c8e88ac90974a5493def9abf7e4ef92f65bea43e9.exe
Size 45KB
Sample260601-tyflraby2n
SHA256 934cccb532798cb588464f4c8e88ac90974a5493def9abf7e4ef92f65bea43e9
MD5 0737c4be95c75ab6c5acfa225e9aade5
SHA1 473369830bc1e0fd2daf8d1d6fd1b92adaa4f990
SHA512 85fdedaac46eb404c22f2fbebece8ece318b7e9bc139c929dd9035be8e295cb8a4009d72e370775120e3d597552107fdc14b4d960870ccc3d2435b8d7b5c5e0e
SSDEEP 768:JuxJNT5UR5rWUX8N5mo2qAnfPLyiObvtkjZPIrzjbZgX8iCBRFkGHTygzBDZbx:JuxJNT5OU2jf2iyyjWr3b2X5C7RHTygB
TLSH
T1B7233D003BE9C12BF2BE4F78A8F26145867AF2676603D9491CC452CB5723FC696426FD
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

viet69s.me:443
viet69s.me:80
viet69s.me:7797
viet69s.me:8707
viet69s.me:6620
www.viet69s.me:443
www.viet69s.me:80
www.viet69s.me:7797
www.viet69s.me:8707
www.viet69s.me:6620
ursnif.viet69s.me:443
ursnif.viet69s.me:80
ursnif.viet69s.me:7797
ursnif.viet69s.me:8707
ursnif.viet69s.me:6620
gh0st.viet69s.me:443
gh0st.viet69s.me:80
gh0st.viet69s.me:7797
gh0st.viet69s.me:8707
gh0st.viet69s.me:6620
invasive.viet69s.me:443
invasive.viet69s.me:80
invasive.viet69s.me:7797
invasive.viet69s.me:8707
invasive.viet69s.me:6620

Mutex

8FQ8uEpV1UZg

Attributes

delay
0
install
true
install_file
ppkp.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/0x001a00000002b5e9-8.dat	family_asyncrat

Executes dropped EXE 2 IoCs

pid	Process
4508	ppkp.exe
3440	ppkp.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	ppkp.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ppkp.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	934cccb532798cb588464f4c8e88ac90974a5493def9abf7e4ef92f65bea43e9.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
3476	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
5584	schtasks.exe

Suspicious behavior: EnumeratesProcesses 17 IoCs

pid	Process
4028	934cccb532798cb588464f4c8e88ac90974a5493def9abf7e4ef92f65bea43e9.exe
4028	934cccb532798cb588464f4c8e88ac90974a5493def9abf7e4ef92f65bea43e9.exe
4028	934cccb532798cb588464f4c8e88ac90974a5493def9abf7e4ef92f65bea43e9.exe
4028	934cccb532798cb588464f4c8e88ac90974a5493def9abf7e4ef92f65bea43e9.exe
4028	934cccb532798cb588464f4c8e88ac90974a5493def9abf7e4ef92f65bea43e9.exe
4028	934cccb532798cb588464f4c8e88ac90974a5493def9abf7e4ef92f65bea43e9.exe
4028	934cccb532798cb588464f4c8e88ac90974a5493def9abf7e4ef92f65bea43e9.exe
4028	934cccb532798cb588464f4c8e88ac90974a5493def9abf7e4ef92f65bea43e9.exe
4028	934cccb532798cb588464f4c8e88ac90974a5493def9abf7e4ef92f65bea43e9.exe
4028	934cccb532798cb588464f4c8e88ac90974a5493def9abf7e4ef92f65bea43e9.exe
4028	934cccb532798cb588464f4c8e88ac90974a5493def9abf7e4ef92f65bea43e9.exe
4028	934cccb532798cb588464f4c8e88ac90974a5493def9abf7e4ef92f65bea43e9.exe
4028	934cccb532798cb588464f4c8e88ac90974a5493def9abf7e4ef92f65bea43e9.exe
4028	934cccb532798cb588464f4c8e88ac90974a5493def9abf7e4ef92f65bea43e9.exe
4028	934cccb532798cb588464f4c8e88ac90974a5493def9abf7e4ef92f65bea43e9.exe
4028	934cccb532798cb588464f4c8e88ac90974a5493def9abf7e4ef92f65bea43e9.exe
4028	934cccb532798cb588464f4c8e88ac90974a5493def9abf7e4ef92f65bea43e9.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4028	934cccb532798cb588464f4c8e88ac90974a5493def9abf7e4ef92f65bea43e9.exe
Token: SeDebugPrivilege	4508	ppkp.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 4028 wrote to memory of 5100	4028	934cccb532798cb588464f4c8e88ac90974a5493def9abf7e4ef92f65bea43e9.exe	80
PID 4028 wrote to memory of 5208	4028	934cccb532798cb588464f4c8e88ac90974a5493def9abf7e4ef92f65bea43e9.exe	82
PID 5100 wrote to memory of 5584	5100	cmd.exe	84
PID 5208 wrote to memory of 3476	5208	cmd.exe	85
PID 5208 wrote to memory of 3440	5208	cmd.exe	88

C:\Users\Admin\AppData\Local\Temp\934cccb532798cb588464f4c8e88ac90974a5493def9abf7e4ef92f65bea43e9.exe
"C:\Users\Admin\AppData\Local\Temp\934cccb532798cb588464f4c8e88ac90974a5493def9abf7e4ef92f65bea43e9.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4028
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "ppkp" /tr '"C:\Users\Admin\AppData\Roaming\ppkp.exe"' & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:5100
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "ppkp" /tr '"C:\Users\Admin\AppData\Roaming\ppkp.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:5584
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpF4C0.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:3476
- - C:\Users\Admin\AppData\Roaming\ppkp.exe
    "C:\Users\Admin\AppData\Roaming\ppkp.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:3440

C:\Users\Admin\AppData\Roaming\ppkp.exe
"C:\Users\Admin\AppData\Roaming\ppkp.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:4508

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

tmpF4C0.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmpF4C0.tmp.bat
Size 148B
SHA256 dedb483cda09f6a1277b4a31f997706adfaae9881cb7d81cedbbe6a9b5428501
MD5 73efe5031ae513af72964f42ecc90397
SHA1 99c1f806cbff5245158abd530bee8312a227830a
SHA512 be3c51e83a0a2a1a50d74028500c6ba62bea8bd9fe62755b18a3ddf088f11baa5eff35001c967ca95d84bbacc4dec4b59aa33207c2557b82e972d7db22c77989
TLSH
T120C02B43A1C5FA0E2C05145706FAD4CEE1B2AC5D3F80BB80C304485D1780448F0D9341
MD5 SHA1 SHA512 TLSH

Submit Download

ppkp.exe

Path C:\Users\Admin\AppData\Roaming\ppkp.exe
Size 45KB
SHA256 934cccb532798cb588464f4c8e88ac90974a5493def9abf7e4ef92f65bea43e9
MD5 0737c4be95c75ab6c5acfa225e9aade5
SHA1 473369830bc1e0fd2daf8d1d6fd1b92adaa4f990
SHA512 85fdedaac46eb404c22f2fbebece8ece318b7e9bc139c929dd9035be8e295cb8a4009d72e370775120e3d597552107fdc14b4d960870ccc3d2435b8d7b5c5e0e
SSDEEP 768:JuxJNT5UR5rWUX8N5mo2qAnfPLyiObvtkjZPIrzjbZgX8iCBRFkGHTygzBDZbx:JuxJNT5OU2jf2iyyjWr3b2X5C7RHTygB
TLSH
T1B7233D003BE9C12BF2BE4F78A8F26145867AF2676603D9491CC452CB5723FC696426FD
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/4028-0-0x0000000000610000-0x0000000000622000-memory.dmp

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memory/4028-1-0x0000000005030000-0x0000000005040000-memory.dmp

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memory/4028-2-0x0000000004F80000-0x000000000501C000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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