asyncrat | 288625db87a9b63d19ac9f12481453711c1b82d0b90b309c10def18a6560ceea

General

Target
288625db87a9b63d19ac9f12481453711c1b82d0b90b309c10def18a6560ceea.exe
Size 45KB
Sample260601-rh6f5agy4n
SHA256 288625db87a9b63d19ac9f12481453711c1b82d0b90b309c10def18a6560ceea
MD5 6342629129e2d7a319b86912a0d185ce
SHA1 83fd8f6480832fb91b342c6474c77dd9a0ccc0a3
SHA512 6125845e41ed7147e645b86f66f93e1a4156bce0926ef473dcc7b3c33137d1484df5816910cde34dec213d9e3b3e94812c36aa2f3530230ad637aa2e116142cf
SSDEEP 768:4uBqJTMUyYUWUWBDimo2qVP0eUNEARViZPI6zjbegB3imMVvLksmBDZbx:4uBqJTMpv22Ue+iW63bhBSnk9dbx
TLSH
T176231A0037E8812BF2BE4F7499F26241867AF6776603D5491CC452D75723BC68A43AEE
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

buomdep.lol:443
buomdep.lol:80
buomdep.lol:7797
buomdep.lol:8707
buomdep.lol:6620
www.buomdep.lol:443
www.buomdep.lol:80
www.buomdep.lol:7797
www.buomdep.lol:8707
www.buomdep.lol:6620
mydoom.buomdep.lol:443
mydoom.buomdep.lol:80
mydoom.buomdep.lol:7797
mydoom.buomdep.lol:8707
mydoom.buomdep.lol:6620
klez.buomdep.lol:443
klez.buomdep.lol:80
klez.buomdep.lol:7797
klez.buomdep.lol:8707
klez.buomdep.lol:6620
revil.buomdep.lol:443
revil.buomdep.lol:80
revil.buomdep.lol:7797
revil.buomdep.lol:8707
revil.buomdep.lol:6620
nanocore.buomdep.lol:443
nanocore.buomdep.lol:80
nanocore.buomdep.lol:7797
nanocore.buomdep.lol:8707
nanocore.buomdep.lol:6620

Mutex

FB8QdHFOwh1L

Attributes

delay
0
install
true
install_file
8ini.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/0x001e00000002b41a-8.dat	family_asyncrat

Executes dropped EXE 2 IoCs

pid	Process
1664	8ini.exe
1832	8ini.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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	8ini.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	8ini.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	288625db87a9b63d19ac9f12481453711c1b82d0b90b309c10def18a6560ceea.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
2508	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
5004	schtasks.exe

Suspicious behavior: EnumeratesProcesses 19 IoCs

pid	Process
4440	288625db87a9b63d19ac9f12481453711c1b82d0b90b309c10def18a6560ceea.exe
4440	288625db87a9b63d19ac9f12481453711c1b82d0b90b309c10def18a6560ceea.exe
4440	288625db87a9b63d19ac9f12481453711c1b82d0b90b309c10def18a6560ceea.exe
4440	288625db87a9b63d19ac9f12481453711c1b82d0b90b309c10def18a6560ceea.exe
4440	288625db87a9b63d19ac9f12481453711c1b82d0b90b309c10def18a6560ceea.exe
4440	288625db87a9b63d19ac9f12481453711c1b82d0b90b309c10def18a6560ceea.exe
4440	288625db87a9b63d19ac9f12481453711c1b82d0b90b309c10def18a6560ceea.exe
4440	288625db87a9b63d19ac9f12481453711c1b82d0b90b309c10def18a6560ceea.exe
4440	288625db87a9b63d19ac9f12481453711c1b82d0b90b309c10def18a6560ceea.exe
4440	288625db87a9b63d19ac9f12481453711c1b82d0b90b309c10def18a6560ceea.exe
4440	288625db87a9b63d19ac9f12481453711c1b82d0b90b309c10def18a6560ceea.exe
4440	288625db87a9b63d19ac9f12481453711c1b82d0b90b309c10def18a6560ceea.exe
4440	288625db87a9b63d19ac9f12481453711c1b82d0b90b309c10def18a6560ceea.exe
4440	288625db87a9b63d19ac9f12481453711c1b82d0b90b309c10def18a6560ceea.exe
4440	288625db87a9b63d19ac9f12481453711c1b82d0b90b309c10def18a6560ceea.exe
4440	288625db87a9b63d19ac9f12481453711c1b82d0b90b309c10def18a6560ceea.exe
4440	288625db87a9b63d19ac9f12481453711c1b82d0b90b309c10def18a6560ceea.exe
4440	288625db87a9b63d19ac9f12481453711c1b82d0b90b309c10def18a6560ceea.exe
4440	288625db87a9b63d19ac9f12481453711c1b82d0b90b309c10def18a6560ceea.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4440	288625db87a9b63d19ac9f12481453711c1b82d0b90b309c10def18a6560ceea.exe
Token: SeDebugPrivilege	1664	8ini.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 4440 wrote to memory of 1892	4440	288625db87a9b63d19ac9f12481453711c1b82d0b90b309c10def18a6560ceea.exe	80
PID 4440 wrote to memory of 4896	4440	288625db87a9b63d19ac9f12481453711c1b82d0b90b309c10def18a6560ceea.exe	81
PID 4896 wrote to memory of 2508	4896	cmd.exe	85
PID 1892 wrote to memory of 5004	1892	cmd.exe	84
PID 4896 wrote to memory of 1832	4896	cmd.exe	88

C:\Users\Admin\AppData\Local\Temp\288625db87a9b63d19ac9f12481453711c1b82d0b90b309c10def18a6560ceea.exe
"C:\Users\Admin\AppData\Local\Temp\288625db87a9b63d19ac9f12481453711c1b82d0b90b309c10def18a6560ceea.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4440
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "8ini" /tr '"C:\Users\Admin\AppData\Roaming\8ini.exe"' & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1892
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "8ini" /tr '"C:\Users\Admin\AppData\Roaming\8ini.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:5004
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp1EF.tmp.bat""
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4896
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:2508
- - C:\Users\Admin\AppData\Roaming\8ini.exe
    "C:\Users\Admin\AppData\Roaming\8ini.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:1832

C:\Users\Admin\AppData\Roaming\8ini.exe
"C:\Users\Admin\AppData\Roaming\8ini.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:1664

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

tmp1EF.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmp1EF.tmp.bat
Size 147B
SHA256 d004006b0a9e0196048966bf9c72dbca3cc7c719862d445945acbd5e578895b6
MD5 88d2ce21f607f36321018fdad7705764
SHA1 46db73a0c4922e486bd2e3fd7fb497f53027b423
SHA512 f9c0079823b693127909d79d37ce02d520a978ce216412f980dc27cc6bab639fa5ed3c34d03ea64f016fde9586dc75d713615575f5f245920c2bf9165616f9d3
TLSH
T126C02B53A1C6EB0E680E143302FED48C91BA6C1D3F40FB00C744404D528048CF0DD341
MD5 SHA1 SHA512 TLSH

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8ini.exe

Path C:\Users\Admin\AppData\Roaming\8ini.exe
Size 45KB
SHA256 288625db87a9b63d19ac9f12481453711c1b82d0b90b309c10def18a6560ceea
MD5 6342629129e2d7a319b86912a0d185ce
SHA1 83fd8f6480832fb91b342c6474c77dd9a0ccc0a3
SHA512 6125845e41ed7147e645b86f66f93e1a4156bce0926ef473dcc7b3c33137d1484df5816910cde34dec213d9e3b3e94812c36aa2f3530230ad637aa2e116142cf
SSDEEP 768:4uBqJTMUyYUWUWBDimo2qVP0eUNEARViZPI6zjbegB3imMVvLksmBDZbx:4uBqJTMpv22Ue+iW63bhBSnk9dbx
TLSH
T176231A0037E8812BF2BE4F7499F26241867AF6776603D5491CC452D75723BC68A43AEE
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/4440-0-0x00000000007A0000-0x00000000007B2000-memory.dmp

Download

memory/4440-1-0x00000000053B0000-0x00000000053C0000-memory.dmp

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memory/4440-2-0x0000000005230000-0x00000000052CC000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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