asyncrat | de8636c5d87d276a4971eab3cbe5d3d3bb18618e8a24ae27b154e1548bd438a4

General

Target

de8636c5d87d276a4971eab3cbe5d3d3bb18618e8a24ae27b154e1548bd438a4.exe
Size

866KB
MD5

17d02350b80c3c03c0be2b1acab650d1
SHA1

775181f6686d21806ba7e6fe4ae1ecdc82d0157f
SHA256

de8636c5d87d276a4971eab3cbe5d3d3bb18618e8a24ae27b154e1548bd438a4
SHA512

e61b19867eb0aff9d43ab7f13ac73217d0bd244e8b908eb902940315d77c3df67fbde40f7d80d602d8f491065fdb98791deb5f3fd4c122ef010f09616d1aaade
SSDEEP

3072:dBUyU7/NUauKvxUjUYqDbf5PBb6Tx3zU5IYUeyUwgUn1UdjgUtGU4rZ/ME+h0UIx:CQdx8nHZtwjWK3FFQgzv1x5

Score

10^/10

asyncrat default persistence rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

Default

C2

hgjvhnfgg.duckdns.org:8057

Mutex

AsyncMutex_6SI8OkPnk

Attributes

delay
3
install
false
install_folder
%AppData%

aes.plain

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
rat asyncrat

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2812790648-3157963462-487717889-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\shell = "explorer.exe,\"C:\\Users\\Admin\\AppData\\Local\\Temp\\de8636c5d87d276a4971eab3cbe5d3d3bb18618e8a24ae27b154e1548bd438a4.exe\""	de8636c5d87d276a4971eab3cbe5d3d3bb18618e8a24ae27b154e1548bd438a4.exe

Detects executables containing artifacts associated with disabling Widnows Defender 1 IoCs

resource	yara_rule
behavioral1/memory/2344-3-0x00000000002F0000-0x0000000000318000-memory.dmp	INDICATOR_SUSPICIOUS_DisableWinDefender

Detects executables embedding command execution via IExecuteCommand COM object 1 IoCs

resource	yara_rule
behavioral1/memory/2344-3-0x00000000002F0000-0x0000000000318000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_RegKeyComb_IExecuteCommandCOM

Detects executables embedding registry key / value combination indicative of disabling Windows Defender features 1 IoCs

resource	yara_rule
behavioral1/memory/2344-3-0x00000000002F0000-0x0000000000318000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_RegKeyComb_DisableWinDefender

Detects executables potentially checking for WinJail sandbox window 2 IoCs

resource	yara_rule
behavioral1/memory/2344-3-0x00000000002F0000-0x0000000000318000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_Anti_WinJail
behavioral1/memory/2344-3-0x00000000002F0000-0x0000000000318000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_Anti_OldCopyPaste

Detects file containing reversed ASEP Autorun registry keys 5 IoCs

resource	yara_rule
behavioral1/memory/2768-11-0x0000000000400000-0x0000000000412000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_ASEP_REG_Reverse
behavioral1/memory/2768-8-0x0000000000400000-0x0000000000412000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_ASEP_REG_Reverse
behavioral1/memory/2768-7-0x0000000000400000-0x0000000000412000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_ASEP_REG_Reverse
behavioral1/memory/2768-13-0x0000000000400000-0x0000000000412000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_ASEP_REG_Reverse
behavioral1/memory/2768-15-0x0000000000400000-0x0000000000412000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_ASEP_REG_Reverse

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\de8636c5d87d276a4971eab3cbe5d3d3bb18618e8a24ae27b154e1548bd438a4.exe	de8636c5d87d276a4971eab3cbe5d3d3bb18618e8a24ae27b154e1548bd438a4.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\de8636c5d87d276a4971eab3cbe5d3d3bb18618e8a24ae27b154e1548bd438a4.exe	de8636c5d87d276a4971eab3cbe5d3d3bb18618e8a24ae27b154e1548bd438a4.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2812790648-3157963462-487717889-1000\Software\Microsoft\Windows\CurrentVersion\Run\<Unknown> = "C:\\Users\\Admin\\AppData\\Local\\Temp\\de8636c5d87d276a4971eab3cbe5d3d3bb18618e8a24ae27b154e1548bd438a4.exe"	de8636c5d87d276a4971eab3cbe5d3d3bb18618e8a24ae27b154e1548bd438a4.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2812790648-3157963462-487717889-1000\Software\Microsoft\Windows\CurrentVersion\Run\de8636c5d87d276a4971eab3cbe5d3d3bb18618e8a24ae27b154e1548bd438a4.exe = "C:\\Users\\Admin\\AppData\\Local\\Temp\\de8636c5d87d276a4971eab3cbe5d3d3bb18618e8a24ae27b154e1548bd438a4.exe"	de8636c5d87d276a4971eab3cbe5d3d3bb18618e8a24ae27b154e1548bd438a4.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 8 IoCs

pid	Process
2344	de8636c5d87d276a4971eab3cbe5d3d3bb18618e8a24ae27b154e1548bd438a4.exe
2344	de8636c5d87d276a4971eab3cbe5d3d3bb18618e8a24ae27b154e1548bd438a4.exe
2344	de8636c5d87d276a4971eab3cbe5d3d3bb18618e8a24ae27b154e1548bd438a4.exe
2344	de8636c5d87d276a4971eab3cbe5d3d3bb18618e8a24ae27b154e1548bd438a4.exe
2344	de8636c5d87d276a4971eab3cbe5d3d3bb18618e8a24ae27b154e1548bd438a4.exe
2344	de8636c5d87d276a4971eab3cbe5d3d3bb18618e8a24ae27b154e1548bd438a4.exe
2344	de8636c5d87d276a4971eab3cbe5d3d3bb18618e8a24ae27b154e1548bd438a4.exe
2344	de8636c5d87d276a4971eab3cbe5d3d3bb18618e8a24ae27b154e1548bd438a4.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2344 set thread context of 2768	2344	de8636c5d87d276a4971eab3cbe5d3d3bb18618e8a24ae27b154e1548bd438a4.exe	31

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1072	2344	WerFault.exe	27

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
2680	timeout.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2344	de8636c5d87d276a4971eab3cbe5d3d3bb18618e8a24ae27b154e1548bd438a4.exe
2344	de8636c5d87d276a4971eab3cbe5d3d3bb18618e8a24ae27b154e1548bd438a4.exe
2344	de8636c5d87d276a4971eab3cbe5d3d3bb18618e8a24ae27b154e1548bd438a4.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2344	de8636c5d87d276a4971eab3cbe5d3d3bb18618e8a24ae27b154e1548bd438a4.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 2344 wrote to memory of 2272	2344	de8636c5d87d276a4971eab3cbe5d3d3bb18618e8a24ae27b154e1548bd438a4.exe	28
PID 2344 wrote to memory of 2272	2344	de8636c5d87d276a4971eab3cbe5d3d3bb18618e8a24ae27b154e1548bd438a4.exe	28
PID 2344 wrote to memory of 2272	2344	de8636c5d87d276a4971eab3cbe5d3d3bb18618e8a24ae27b154e1548bd438a4.exe	28
PID 2344 wrote to memory of 2272	2344	de8636c5d87d276a4971eab3cbe5d3d3bb18618e8a24ae27b154e1548bd438a4.exe	28
PID 2272 wrote to memory of 2680	2272	cmd.exe	30
PID 2272 wrote to memory of 2680	2272	cmd.exe	30
PID 2272 wrote to memory of 2680	2272	cmd.exe	30
PID 2272 wrote to memory of 2680	2272	cmd.exe	30
PID 2344 wrote to memory of 2768	2344	de8636c5d87d276a4971eab3cbe5d3d3bb18618e8a24ae27b154e1548bd438a4.exe	31
PID 2344 wrote to memory of 2768	2344	de8636c5d87d276a4971eab3cbe5d3d3bb18618e8a24ae27b154e1548bd438a4.exe	31
PID 2344 wrote to memory of 2768	2344	de8636c5d87d276a4971eab3cbe5d3d3bb18618e8a24ae27b154e1548bd438a4.exe	31
PID 2344 wrote to memory of 2768	2344	de8636c5d87d276a4971eab3cbe5d3d3bb18618e8a24ae27b154e1548bd438a4.exe	31
PID 2344 wrote to memory of 2768	2344	de8636c5d87d276a4971eab3cbe5d3d3bb18618e8a24ae27b154e1548bd438a4.exe	31
PID 2344 wrote to memory of 2768	2344	de8636c5d87d276a4971eab3cbe5d3d3bb18618e8a24ae27b154e1548bd438a4.exe	31
PID 2344 wrote to memory of 2768	2344	de8636c5d87d276a4971eab3cbe5d3d3bb18618e8a24ae27b154e1548bd438a4.exe	31
PID 2344 wrote to memory of 2768	2344	de8636c5d87d276a4971eab3cbe5d3d3bb18618e8a24ae27b154e1548bd438a4.exe	31
PID 2344 wrote to memory of 2768	2344	de8636c5d87d276a4971eab3cbe5d3d3bb18618e8a24ae27b154e1548bd438a4.exe	31
PID 2344 wrote to memory of 1072	2344	de8636c5d87d276a4971eab3cbe5d3d3bb18618e8a24ae27b154e1548bd438a4.exe	32
PID 2344 wrote to memory of 1072	2344	de8636c5d87d276a4971eab3cbe5d3d3bb18618e8a24ae27b154e1548bd438a4.exe	32
PID 2344 wrote to memory of 1072	2344	de8636c5d87d276a4971eab3cbe5d3d3bb18618e8a24ae27b154e1548bd438a4.exe	32
PID 2344 wrote to memory of 1072	2344	de8636c5d87d276a4971eab3cbe5d3d3bb18618e8a24ae27b154e1548bd438a4.exe	32

C:\Users\Admin\AppData\Local\Temp\de8636c5d87d276a4971eab3cbe5d3d3bb18618e8a24ae27b154e1548bd438a4.exe
"C:\Users\Admin\AppData\Local\Temp\de8636c5d87d276a4971eab3cbe5d3d3bb18618e8a24ae27b154e1548bd438a4.exe"
1⤵
- Modifies WinLogon for persistence
- Drops startup file
- Adds Run key to start application
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2344
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c timeout 1
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2272
- - C:\Windows\SysWOW64\timeout.exe
    timeout 1
    3⤵
    - Delays execution with timeout.exe
    PID:2680
- C:\Users\Admin\AppData\Local\Temp\de8636c5d87d276a4971eab3cbe5d3d3bb18618e8a24ae27b154e1548bd438a4.exe
  "C:\Users\Admin\AppData\Local\Temp\de8636c5d87d276a4971eab3cbe5d3d3bb18618e8a24ae27b154e1548bd438a4.exe"
  2⤵
  PID:2768
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2344 -s 784
  2⤵
  - Program crash
  PID:1072

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

2

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Winlogon Helper DLL

1

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

2

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Winlogon Helper DLL

1

T1547.004

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/2344-0-0x000000007468E000-0x000000007468F000-memory.dmp

Filesize
4KB

Download
memory/2344-1-0x00000000013C0000-0x000000000149C000-memory.dmp

Filesize
880KB

Download
memory/2344-2-0x0000000074680000-0x0000000074D6E000-memory.dmp

Filesize
6.9MB

Download
memory/2344-3-0x00000000002F0000-0x0000000000318000-memory.dmp

Filesize
160KB

Download
memory/2344-17-0x0000000074680000-0x0000000074D6E000-memory.dmp

Filesize
6.9MB

Download
memory/2344-16-0x000000007468E000-0x000000007468F000-memory.dmp

Filesize
4KB

Download
memory/2768-9-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2768-8-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2768-7-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2768-5-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2768-13-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2768-15-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2768-11-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2768-6-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads