asyncrat | 2b5747d8de1c9a4f422c5192ca5106e1b5691d5072085b002527dbd957c16076

General

Target
2b5747d8de1c9a4f422c5192ca5106e1b5691d5072085b002527dbd957c16076.exe
Size 45KB
Sample260601-nvs5saas7s
SHA256 2b5747d8de1c9a4f422c5192ca5106e1b5691d5072085b002527dbd957c16076
MD5 69d8a58efe225316110c786639d5088a
SHA1 2d559683e8e566e4cccaa41a0689ccc65797221a
SHA512 e597915551ad4f9bfb65d70c039c98151060b795e5ab0b151576d04c49e4b682a1d0d205dfb7084020fe3c4963102a206143d890ba876f991af11a3277677a41
SSDEEP 768:4uBqJTMUyYUWUWBDimo2qVvLiE0yFjrdjYkk8PIuvjbegX3iLwWKqJIwCLi+T7Yy:4uBqJTMpv2CLBXQBubbhXSLwWQDi2YP6
TLSH
T11D232A0037E9812BF6BE4F7459F26245867AF6633603D5891CC441DB1B23BC68A43AFE
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

sexx69.blog:443
sexx69.blog:80
sexx69.blog:7797
sexx69.blog:8707
sexx69.blog:6620
www.sexx69.blog:443
www.sexx69.blog:80
www.sexx69.blog:7797
www.sexx69.blog:8707
www.sexx69.blog:6620
remcos.sexx69.blog:443
remcos.sexx69.blog:80
remcos.sexx69.blog:7797
remcos.sexx69.blog:8707
remcos.sexx69.blog:6620
ursnif.sexx69.blog:443
ursnif.sexx69.blog:80
ursnif.sexx69.blog:7797
ursnif.sexx69.blog:8707
ursnif.sexx69.blog:6620
sasser.sexx69.blog:443
sasser.sexx69.blog:80
sasser.sexx69.blog:7797
sasser.sexx69.blog:8707
sasser.sexx69.blog:6620
industroyer.sexx69.blog:443
industroyer.sexx69.blog:80
industroyer.sexx69.blog:7797
industroyer.sexx69.blog:8707
industroyer.sexx69.blog:6620

Mutex

4UKSnKndauDP

Attributes

delay
0
install
true
install_file
7i28.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/0x002000000002b2c2-8.dat	family_asyncrat

Executes dropped EXE 2 IoCs

pid	Process
3232	7i28.exe
600	7i28.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	7i28.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	7i28.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2b5747d8de1c9a4f422c5192ca5106e1b5691d5072085b002527dbd957c16076.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
4064	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
1820	schtasks.exe

Suspicious behavior: EnumeratesProcesses 19 IoCs

pid	Process
4624	2b5747d8de1c9a4f422c5192ca5106e1b5691d5072085b002527dbd957c16076.exe
4624	2b5747d8de1c9a4f422c5192ca5106e1b5691d5072085b002527dbd957c16076.exe
4624	2b5747d8de1c9a4f422c5192ca5106e1b5691d5072085b002527dbd957c16076.exe
4624	2b5747d8de1c9a4f422c5192ca5106e1b5691d5072085b002527dbd957c16076.exe
4624	2b5747d8de1c9a4f422c5192ca5106e1b5691d5072085b002527dbd957c16076.exe
4624	2b5747d8de1c9a4f422c5192ca5106e1b5691d5072085b002527dbd957c16076.exe
4624	2b5747d8de1c9a4f422c5192ca5106e1b5691d5072085b002527dbd957c16076.exe
4624	2b5747d8de1c9a4f422c5192ca5106e1b5691d5072085b002527dbd957c16076.exe
4624	2b5747d8de1c9a4f422c5192ca5106e1b5691d5072085b002527dbd957c16076.exe
4624	2b5747d8de1c9a4f422c5192ca5106e1b5691d5072085b002527dbd957c16076.exe
4624	2b5747d8de1c9a4f422c5192ca5106e1b5691d5072085b002527dbd957c16076.exe
4624	2b5747d8de1c9a4f422c5192ca5106e1b5691d5072085b002527dbd957c16076.exe
4624	2b5747d8de1c9a4f422c5192ca5106e1b5691d5072085b002527dbd957c16076.exe
4624	2b5747d8de1c9a4f422c5192ca5106e1b5691d5072085b002527dbd957c16076.exe
4624	2b5747d8de1c9a4f422c5192ca5106e1b5691d5072085b002527dbd957c16076.exe
4624	2b5747d8de1c9a4f422c5192ca5106e1b5691d5072085b002527dbd957c16076.exe
4624	2b5747d8de1c9a4f422c5192ca5106e1b5691d5072085b002527dbd957c16076.exe
4624	2b5747d8de1c9a4f422c5192ca5106e1b5691d5072085b002527dbd957c16076.exe
4624	2b5747d8de1c9a4f422c5192ca5106e1b5691d5072085b002527dbd957c16076.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4624	2b5747d8de1c9a4f422c5192ca5106e1b5691d5072085b002527dbd957c16076.exe
Token: SeDebugPrivilege	3232	7i28.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 4624 wrote to memory of 2348	4624	2b5747d8de1c9a4f422c5192ca5106e1b5691d5072085b002527dbd957c16076.exe	80
PID 4624 wrote to memory of 4848	4624	2b5747d8de1c9a4f422c5192ca5106e1b5691d5072085b002527dbd957c16076.exe	82
PID 2348 wrote to memory of 1820	2348	cmd.exe	84
PID 4848 wrote to memory of 4064	4848	cmd.exe	85
PID 4848 wrote to memory of 600	4848	cmd.exe	88

C:\Users\Admin\AppData\Local\Temp\2b5747d8de1c9a4f422c5192ca5106e1b5691d5072085b002527dbd957c16076.exe
"C:\Users\Admin\AppData\Local\Temp\2b5747d8de1c9a4f422c5192ca5106e1b5691d5072085b002527dbd957c16076.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4624
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "7i28" /tr '"C:\Users\Admin\AppData\Roaming\7i28.exe"' & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2348
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "7i28" /tr '"C:\Users\Admin\AppData\Roaming\7i28.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:1820
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp942.tmp.bat""
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4848
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:4064
- - C:\Users\Admin\AppData\Roaming\7i28.exe
    "C:\Users\Admin\AppData\Roaming\7i28.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:600

C:\Users\Admin\AppData\Roaming\7i28.exe
"C:\Users\Admin\AppData\Roaming\7i28.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:3232

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

tmp942.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmp942.tmp.bat
Size 147B
SHA256 6f58079bb1e5df22ae298d30694671b51db0c3b4e960ea8c74b23aff88eb4f4d
MD5 c26b98cde234337e884bf4107351dbfe
SHA1 2711df633f98d7183aa095b6f1c34ad70ea6ae73
SHA512 da4ce81a019086c4157ae5af6de49de924c4d4f6c825132648d4a6ab1ff8ffa82eff335e3b277c3ee2dc607f15f9b0a57cd3a6b1373ee24986a79e14e7fbc4b5
TLSH
T10CC02BC261C5EA0E2C09243316FAD4DCA1776C2B3F40FB80C304444D1280448F0D9381
MD5 SHA1 SHA512 TLSH

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7i28.exe

Path C:\Users\Admin\AppData\Roaming\7i28.exe
Size 45KB
SHA256 2b5747d8de1c9a4f422c5192ca5106e1b5691d5072085b002527dbd957c16076
MD5 69d8a58efe225316110c786639d5088a
SHA1 2d559683e8e566e4cccaa41a0689ccc65797221a
SHA512 e597915551ad4f9bfb65d70c039c98151060b795e5ab0b151576d04c49e4b682a1d0d205dfb7084020fe3c4963102a206143d890ba876f991af11a3277677a41
SSDEEP 768:4uBqJTMUyYUWUWBDimo2qVvLiE0yFjrdjYkk8PIuvjbegX3iLwWKqJIwCLi+T7Yy:4uBqJTMpv2CLBXQBubbhXSLwWQDi2YP6
TLSH
T11D232A0037E9812BF6BE4F7459F26245867AF6633603D5891CC441DB1B23BC68A43AFE
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/4624-0-0x00000000006A0000-0x00000000006B2000-memory.dmp

Download

memory/4624-1-0x00000000051F0000-0x0000000005200000-memory.dmp

Download

memory/4624-2-0x0000000005120000-0x00000000051BC000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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