asyncrat | 7328c46ea3ed25c59c79653d46543d6f822a157c3aba8d8f2b595de0b6817a4d

General

Target
7328c46ea3ed25c59c79653d46543d6f822a157c3aba8d8f2b595de0b6817a4d.exe
Size 45KB
Sample260601-vmvf7sa121
SHA256 7328c46ea3ed25c59c79653d46543d6f822a157c3aba8d8f2b595de0b6817a4d
MD5 48c4b572eeed37d86c097d2d0573a20a
SHA1 4b34b0775fff449ccc35e7e564fc6bae1fdb3f55
SHA512 5fa2bc93ddcc9533653d28750f58ceb7058cee5becf602a2e0d6757f1a4ef1b884557c7c3283f13268af104522a2b8ace257703a07651484d5e16b556ef07ec0
SSDEEP 768:puNA/9T85LafWUzvSdmo2qIF9EsxFNbeOPIMVzjbCgX3fk+mkIe7RPvBDZ7x:puNA/9T8p72ZjX63MV3blXvkleFZd7x
TLSH
T113232B003BE9812BF2BE4FB89DF26145467AF2633603D6491CC451DB5613FC69A42AFE
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

sexdep.blog:443
sexdep.blog:80
sexdep.blog:7797
sexdep.blog:8707
sexdep.blog:6620
www.sexdep.blog:443
www.sexdep.blog:80
www.sexdep.blog:7797
www.sexdep.blog:8707
www.sexdep.blog:6620
dridex.sexdep.blog:443
dridex.sexdep.blog:80
dridex.sexdep.blog:7797
dridex.sexdep.blog:8707
dridex.sexdep.blog:6620
trisis.sexdep.blog:443
trisis.sexdep.blog:80
trisis.sexdep.blog:7797
trisis.sexdep.blog:8707
trisis.sexdep.blog:6620

Mutex

sd6nGFlFFQeT

Attributes

delay
0
install
true
install_file
b80ers.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/0x000300000002a213-8.dat	family_asyncrat

Executes dropped EXE 2 IoCs

pid	Process
1140	b80ers.exe
4836	b80ers.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	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b80ers.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b80ers.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	7328c46ea3ed25c59c79653d46543d6f822a157c3aba8d8f2b595de0b6817a4d.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
1668	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
2736	schtasks.exe

Suspicious behavior: EnumeratesProcesses 19 IoCs

pid	Process
2372	7328c46ea3ed25c59c79653d46543d6f822a157c3aba8d8f2b595de0b6817a4d.exe
2372	7328c46ea3ed25c59c79653d46543d6f822a157c3aba8d8f2b595de0b6817a4d.exe
2372	7328c46ea3ed25c59c79653d46543d6f822a157c3aba8d8f2b595de0b6817a4d.exe
2372	7328c46ea3ed25c59c79653d46543d6f822a157c3aba8d8f2b595de0b6817a4d.exe
2372	7328c46ea3ed25c59c79653d46543d6f822a157c3aba8d8f2b595de0b6817a4d.exe
2372	7328c46ea3ed25c59c79653d46543d6f822a157c3aba8d8f2b595de0b6817a4d.exe
2372	7328c46ea3ed25c59c79653d46543d6f822a157c3aba8d8f2b595de0b6817a4d.exe
2372	7328c46ea3ed25c59c79653d46543d6f822a157c3aba8d8f2b595de0b6817a4d.exe
2372	7328c46ea3ed25c59c79653d46543d6f822a157c3aba8d8f2b595de0b6817a4d.exe
2372	7328c46ea3ed25c59c79653d46543d6f822a157c3aba8d8f2b595de0b6817a4d.exe
2372	7328c46ea3ed25c59c79653d46543d6f822a157c3aba8d8f2b595de0b6817a4d.exe
2372	7328c46ea3ed25c59c79653d46543d6f822a157c3aba8d8f2b595de0b6817a4d.exe
2372	7328c46ea3ed25c59c79653d46543d6f822a157c3aba8d8f2b595de0b6817a4d.exe
2372	7328c46ea3ed25c59c79653d46543d6f822a157c3aba8d8f2b595de0b6817a4d.exe
2372	7328c46ea3ed25c59c79653d46543d6f822a157c3aba8d8f2b595de0b6817a4d.exe
2372	7328c46ea3ed25c59c79653d46543d6f822a157c3aba8d8f2b595de0b6817a4d.exe
2372	7328c46ea3ed25c59c79653d46543d6f822a157c3aba8d8f2b595de0b6817a4d.exe
2372	7328c46ea3ed25c59c79653d46543d6f822a157c3aba8d8f2b595de0b6817a4d.exe
2372	7328c46ea3ed25c59c79653d46543d6f822a157c3aba8d8f2b595de0b6817a4d.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2372	7328c46ea3ed25c59c79653d46543d6f822a157c3aba8d8f2b595de0b6817a4d.exe
Token: SeDebugPrivilege	1140	b80ers.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 2372 wrote to memory of 1900	2372	7328c46ea3ed25c59c79653d46543d6f822a157c3aba8d8f2b595de0b6817a4d.exe	82
PID 2372 wrote to memory of 4300	2372	7328c46ea3ed25c59c79653d46543d6f822a157c3aba8d8f2b595de0b6817a4d.exe	84
PID 1900 wrote to memory of 2736	1900	cmd.exe	86
PID 4300 wrote to memory of 1668	4300	cmd.exe	87
PID 4300 wrote to memory of 4836	4300	cmd.exe	90

C:\Users\Admin\AppData\Local\Temp\7328c46ea3ed25c59c79653d46543d6f822a157c3aba8d8f2b595de0b6817a4d.exe
"C:\Users\Admin\AppData\Local\Temp\7328c46ea3ed25c59c79653d46543d6f822a157c3aba8d8f2b595de0b6817a4d.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2372
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "b80ers" /tr '"C:\Users\Admin\AppData\Roaming\b80ers.exe"' & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1900
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "b80ers" /tr '"C:\Users\Admin\AppData\Roaming\b80ers.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2736
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp5E67.tmp.bat""
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4300
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:1668
- - C:\Users\Admin\AppData\Roaming\b80ers.exe
    "C:\Users\Admin\AppData\Roaming\b80ers.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:4836

C:\Users\Admin\AppData\Roaming\b80ers.exe
"C:\Users\Admin\AppData\Roaming\b80ers.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:1140

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

tmp5E67.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmp5E67.tmp.bat
Size 150B
SHA256 7a09f0f80dc1a74349e27a1c06e606f97d779ec452c6995014e4f573a9e25a6a
MD5 acd5380aed19b47d2c00c9f98a4b271e
SHA1 04094437afee4de96186f5b356001aa52599e265
SHA512 87fa1f1286960f5e6f826f55e2dac5b0d9bfa9e92af7b152e12887f6653140c57f7ee89a97d4a36c01de924043488ca7e504e57c65b6aa1c9fbb2fc3b14fa0fc
TLSH
T12CC08C8251C5AA0E6806545326BAD98CA2626C1A3E40AB00A304400B628044CE0F9241
MD5 SHA1 SHA512 TLSH

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b80ers.exe

Path C:\Users\Admin\AppData\Roaming\b80ers.exe
Size 45KB
SHA256 7328c46ea3ed25c59c79653d46543d6f822a157c3aba8d8f2b595de0b6817a4d
MD5 48c4b572eeed37d86c097d2d0573a20a
SHA1 4b34b0775fff449ccc35e7e564fc6bae1fdb3f55
SHA512 5fa2bc93ddcc9533653d28750f58ceb7058cee5becf602a2e0d6757f1a4ef1b884557c7c3283f13268af104522a2b8ace257703a07651484d5e16b556ef07ec0
SSDEEP 768:puNA/9T85LafWUzvSdmo2qIF9EsxFNbeOPIMVzjbCgX3fk+mkIe7RPvBDZ7x:puNA/9T8p72ZjX63MV3blXvkleFZd7x
TLSH
T113232B003BE9812BF2BE4FB89DF26145467AF2633603D6491CC451DB5613FC69A42AFE
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/2372-0-0x00000000004D0000-0x00000000004E2000-memory.dmp

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memory/2372-1-0x0000000004FD0000-0x0000000004FE0000-memory.dmp

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memory/2372-2-0x0000000004FE0000-0x000000000507C000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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