asyncrat | 05abc8321d90061e285704ca7d3d59818c444f3df43fe4a37bcfd9937f7bfd6a

General

Target

4fd695d95e1d73d7bbacee02f59d8319.exe
Size

1.4MB
MD5

4fd695d95e1d73d7bbacee02f59d8319
SHA1

ab88c76972f3f89960cdf1f266af724a3fd43593
SHA256

05abc8321d90061e285704ca7d3d59818c444f3df43fe4a37bcfd9937f7bfd6a
SHA512

935f6bc5477bdaedcd88affb758f554788543af3048bf46f6278f89cf511911ccecf0b3efe11456a75b719181db534082b17b615603c9fe46c6940be20f9e6b4

Score

10^/10

asyncrat rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

C2

45.15.143.199:6606

45.15.143.199:7707

45.15.143.199:8808

Mutex

AsyncMutex_6SI8OkPnk

Attributes

aes_key
OoiQ3awN02CPVF1J0BXVxr90eBdh9zc6
anti_detection
false
autorun
false
bdos
false
delay
Default
host
45.15.143.199
hwid
3
install_file
install_folder
%AppData%
mutex
AsyncMutex_6SI8OkPnk
pastebin_config
null
port
6606,7707,8808
version
0.5.7B

aes.plain

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers.
rat asyncrat

Async RAT payload 3 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/1108-66-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat
behavioral1/memory/1108-67-0x000000000040C70E-mapping.dmp	asyncrat
behavioral1/memory/1108-68-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat

Suspicious use of NtSetInformationThreadHideFromDebugger 8 IoCs

Processes:

4fd695d95e1d73d7bbacee02f59d8319.exe

pid	process
1092	4fd695d95e1d73d7bbacee02f59d8319.exe
1092	4fd695d95e1d73d7bbacee02f59d8319.exe
1092	4fd695d95e1d73d7bbacee02f59d8319.exe
1092	4fd695d95e1d73d7bbacee02f59d8319.exe
1092	4fd695d95e1d73d7bbacee02f59d8319.exe
1092	4fd695d95e1d73d7bbacee02f59d8319.exe
1092	4fd695d95e1d73d7bbacee02f59d8319.exe
1092	4fd695d95e1d73d7bbacee02f59d8319.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

4fd695d95e1d73d7bbacee02f59d8319.exe

description pid process target process

PID 1092 set thread context of 1108 1092 4fd695d95e1d73d7bbacee02f59d8319.exe 4fd695d95e1d73d7bbacee02f59d8319.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

1104 1092 WerFault.exe 4fd695d95e1d73d7bbacee02f59d8319.exe
Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

108 timeout.exe

description	pid	process	target process
PID 1092 set thread context of 1108	1092	4fd695d95e1d73d7bbacee02f59d8319.exe	4fd695d95e1d73d7bbacee02f59d8319.exe

pid	pid_target	process	target process
1104	1092	WerFault.exe	4fd695d95e1d73d7bbacee02f59d8319.exe

pid	process
108	timeout.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

Processes:

4fd695d95e1d73d7bbacee02f59d8319.exeWerFault.exe

pid	process
1092	4fd695d95e1d73d7bbacee02f59d8319.exe
1092	4fd695d95e1d73d7bbacee02f59d8319.exe
1092	4fd695d95e1d73d7bbacee02f59d8319.exe
1104	WerFault.exe
1104	WerFault.exe
1104	WerFault.exe
1104	WerFault.exe
1104	WerFault.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

WerFault.exe

pid process

1104 WerFault.exe

pid	process
1104	WerFault.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

4fd695d95e1d73d7bbacee02f59d8319.exeWerFault.exe4fd695d95e1d73d7bbacee02f59d8319.exe

description	pid	process
Token: SeDebugPrivilege	1092	4fd695d95e1d73d7bbacee02f59d8319.exe
Token: SeDebugPrivilege	1104	WerFault.exe
Token: SeDebugPrivilege	1108	4fd695d95e1d73d7bbacee02f59d8319.exe

Suspicious use of WriteProcessMemory 21 IoCs

Processes:

4fd695d95e1d73d7bbacee02f59d8319.execmd.exe

description	pid	process	target process
PID 1092 wrote to memory of 1636	1092	4fd695d95e1d73d7bbacee02f59d8319.exe	cmd.exe
PID 1092 wrote to memory of 1636	1092	4fd695d95e1d73d7bbacee02f59d8319.exe	cmd.exe
PID 1092 wrote to memory of 1636	1092	4fd695d95e1d73d7bbacee02f59d8319.exe	cmd.exe
PID 1092 wrote to memory of 1636	1092	4fd695d95e1d73d7bbacee02f59d8319.exe	cmd.exe
PID 1636 wrote to memory of 108	1636	cmd.exe	timeout.exe
PID 1636 wrote to memory of 108	1636	cmd.exe	timeout.exe
PID 1636 wrote to memory of 108	1636	cmd.exe	timeout.exe
PID 1636 wrote to memory of 108	1636	cmd.exe	timeout.exe
PID 1092 wrote to memory of 1108	1092	4fd695d95e1d73d7bbacee02f59d8319.exe	4fd695d95e1d73d7bbacee02f59d8319.exe
PID 1092 wrote to memory of 1108	1092	4fd695d95e1d73d7bbacee02f59d8319.exe	4fd695d95e1d73d7bbacee02f59d8319.exe
PID 1092 wrote to memory of 1108	1092	4fd695d95e1d73d7bbacee02f59d8319.exe	4fd695d95e1d73d7bbacee02f59d8319.exe
PID 1092 wrote to memory of 1108	1092	4fd695d95e1d73d7bbacee02f59d8319.exe	4fd695d95e1d73d7bbacee02f59d8319.exe
PID 1092 wrote to memory of 1108	1092	4fd695d95e1d73d7bbacee02f59d8319.exe	4fd695d95e1d73d7bbacee02f59d8319.exe
PID 1092 wrote to memory of 1108	1092	4fd695d95e1d73d7bbacee02f59d8319.exe	4fd695d95e1d73d7bbacee02f59d8319.exe
PID 1092 wrote to memory of 1108	1092	4fd695d95e1d73d7bbacee02f59d8319.exe	4fd695d95e1d73d7bbacee02f59d8319.exe
PID 1092 wrote to memory of 1108	1092	4fd695d95e1d73d7bbacee02f59d8319.exe	4fd695d95e1d73d7bbacee02f59d8319.exe
PID 1092 wrote to memory of 1108	1092	4fd695d95e1d73d7bbacee02f59d8319.exe	4fd695d95e1d73d7bbacee02f59d8319.exe
PID 1092 wrote to memory of 1104	1092	4fd695d95e1d73d7bbacee02f59d8319.exe	WerFault.exe
PID 1092 wrote to memory of 1104	1092	4fd695d95e1d73d7bbacee02f59d8319.exe	WerFault.exe
PID 1092 wrote to memory of 1104	1092	4fd695d95e1d73d7bbacee02f59d8319.exe	WerFault.exe
PID 1092 wrote to memory of 1104	1092	4fd695d95e1d73d7bbacee02f59d8319.exe	WerFault.exe

C:\Users\Admin\AppData\Local\Temp\4fd695d95e1d73d7bbacee02f59d8319.exe
"C:\Users\Admin\AppData\Local\Temp\4fd695d95e1d73d7bbacee02f59d8319.exe"
1⤵
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1092

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c timeout 1
2⤵
- Suspicious use of WriteProcessMemory
PID:1636

C:\Windows\SysWOW64\timeout.exe
timeout 1
3⤵
- Delays execution with timeout.exe
PID:108

C:\Users\Admin\AppData\Local\Temp\4fd695d95e1d73d7bbacee02f59d8319.exe
"C:\Users\Admin\AppData\Local\Temp\4fd695d95e1d73d7bbacee02f59d8319.exe"
2⤵
- Suspicious use of AdjustPrivilegeToken
PID:1108

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1092 -s 888
2⤵
- Program crash
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
PID:1104

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

memory/108-64-0x0000000000000000-mapping.dmp

Download
memory/1092-60-0x0000000000030000-0x0000000000031000-memory.dmp

Filesize
4KB

Download
memory/1092-62-0x0000000000690000-0x00000000006C4000-memory.dmp

Filesize
208KB

Download
memory/1092-65-0x0000000005FE0000-0x0000000005FE1000-memory.dmp

Filesize
4KB

Download
memory/1104-70-0x0000000000000000-mapping.dmp

Download
memory/1104-71-0x0000000000250000-0x00000000002B0000-memory.dmp

Filesize
384KB

Download
memory/1108-66-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1108-67-0x000000000040C70E-mapping.dmp

Download
memory/1108-68-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1108-72-0x0000000004C50000-0x0000000004C51000-memory.dmp

Filesize
4KB

Download
memory/1636-63-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads