asyncrat | 59e87378782563d90357f748e5a697bfd5eb55ce592fffd0e5812ae328f8a68e

General

Target
fodfoga.exe
Size 45KB
Sample260601-l984fabs2n
SHA256 59e87378782563d90357f748e5a697bfd5eb55ce592fffd0e5812ae328f8a68e
MD5 b8fddb6e204269531d6d86a56891a252
SHA1 d5385432f34de4f5cec6d076f8a2cf02d19265d4
SHA512 d2bbc19044bfcbf4be17a2aa8845d0016b0124724becb020dbbe0e7a251af41b0f6c3633c24f59de066d8ca964b887fd8a9f4552983a8888d3c8ff52bc0deddd
SSDEEP 768:tuyZNTAoZjRWUJd9bmo2qL+ozHyvCKPIiNjbOgX3iLaHG2JVkanLYIBDZKx:tuyZNTAGL2QL5iFbxXSLapoZudKx
TLSH
T15E232B003BE9C127F2BF5F78ADF22145857AF6632A03D6491CC411DB1613BC69A526FE
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

spica.jp.net:80
spica.jp.net:443
malware.spica.jp.net:80
malware.spica.jp.net:443

Mutex

rDSSAkSChWLx

Attributes

delay
3
install
true
install_file
fodfoga.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/0x001900000002b6d5-8.dat	family_asyncrat

Executes dropped EXE 2 IoCs

pid	Process
3248	fodfoga.exe
4140	fodfoga.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	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	fodfoga.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	fodfoga.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	fodfoga.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
4448	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
6132	schtasks.exe

Suspicious behavior: EnumeratesProcesses 19 IoCs

pid	Process
5128	fodfoga.exe
5128	fodfoga.exe
5128	fodfoga.exe
5128	fodfoga.exe
5128	fodfoga.exe
5128	fodfoga.exe
5128	fodfoga.exe
5128	fodfoga.exe
5128	fodfoga.exe
5128	fodfoga.exe
5128	fodfoga.exe
5128	fodfoga.exe
5128	fodfoga.exe
5128	fodfoga.exe
5128	fodfoga.exe
5128	fodfoga.exe
5128	fodfoga.exe
5128	fodfoga.exe
5128	fodfoga.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	5128	fodfoga.exe
Token: SeDebugPrivilege	3248	fodfoga.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 5128 wrote to memory of 3388	5128	fodfoga.exe	80
PID 5128 wrote to memory of 2260	5128	fodfoga.exe	82
PID 2260 wrote to memory of 4448	2260	cmd.exe	85
PID 3388 wrote to memory of 6132	3388	cmd.exe	84
PID 2260 wrote to memory of 4140	2260	cmd.exe	88

C:\Users\Admin\AppData\Local\Temp\fodfoga.exe
"C:\Users\Admin\AppData\Local\Temp\fodfoga.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:5128
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "fodfoga" /tr '"C:\Users\Admin\AppData\Roaming\fodfoga.exe"' & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3388
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "fodfoga" /tr '"C:\Users\Admin\AppData\Roaming\fodfoga.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:6132
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp6CCE.tmp.bat""
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2260
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:4448
- - C:\Users\Admin\AppData\Roaming\fodfoga.exe
    "C:\Users\Admin\AppData\Roaming\fodfoga.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:4140

C:\Users\Admin\AppData\Roaming\fodfoga.exe
"C:\Users\Admin\AppData\Roaming\fodfoga.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:3248

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

fodfoga.exe.log

Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\fodfoga.exe.log
Size 522B
SHA256 3a8c487575696f7ace931dc220c85a47d33e0ead96aa9e47c705fee5dfac667a
MD5 db9f45365506c49961bfaf3be1475ad2
SHA1 6bd7222f7b7e3e9685207cb285091c92728168e4
SHA512 807028e2aed5b25b2d19ec4f09867746456de4e506c90c73e6730b35303511349a79ca0b9290509664edc0433d47e3fc7f2661534293ebb82185b1494da86a41
TLSH
T10DF09E303231B1D848023F42181C7A8942EF0746B7B8DF2D3650231EDC350176F212E3
MD5 SHA1 SHA512 TLSH

Submit Download

tmp6CCE.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmp6CCE.tmp.bat
Size 151B
SHA256 83bf3652bf87e05d88441be71d12c828e2e697c5cccbe4099acbb4c59e94cbce
MD5 957bf8e735fd63d3fac79401f2c08313
SHA1 d8e745210866b638fc05ac68074cfc6de5836f82
SHA512 4634747b5eb9328f714574c33c9a65b00cf1edd093063bbc4acea112303d20a77ae543ab85b6902ee5011475e02af94f36ccb52e121145fd09af6ecfb20f35e8
TLSH
T145C08C9256C9EA0F6905581302FA999D91B2A9AD3F80AB00870E800D1280489F09A241
MD5 SHA1 SHA512 TLSH

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fodfoga.exe

Path C:\Users\Admin\AppData\Roaming\fodfoga.exe
Size 45KB
SHA256 59e87378782563d90357f748e5a697bfd5eb55ce592fffd0e5812ae328f8a68e
MD5 b8fddb6e204269531d6d86a56891a252
SHA1 d5385432f34de4f5cec6d076f8a2cf02d19265d4
SHA512 d2bbc19044bfcbf4be17a2aa8845d0016b0124724becb020dbbe0e7a251af41b0f6c3633c24f59de066d8ca964b887fd8a9f4552983a8888d3c8ff52bc0deddd
SSDEEP 768:tuyZNTAoZjRWUJd9bmo2qL+ozHyvCKPIiNjbOgX3iLaHG2JVkanLYIBDZKx:tuyZNTAGL2QL5iFbxXSLapoZudKx
TLSH
T15E232B003BE9C127F2BF5F78ADF22145857AF6632A03D6491CC411DB1613BC69A526FE
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/5128-0-0x00000000001B0000-0x00000000001C2000-memory.dmp

Download

memory/5128-1-0x0000000004C10000-0x0000000004C20000-memory.dmp

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memory/5128-2-0x0000000004B30000-0x0000000004BCC000-memory.dmp

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Resubmissions

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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Downloads