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 2 IoCs

rat

Processes:

resource	yara_rule
behavioral2/memory/2100-122-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat
behavioral2/memory/2100-123-0x000000000040C70E-mapping.dmp	asyncrat

Suspicious use of NtSetInformationThreadHideFromDebugger 12 IoCs

Processes:

4fd695d95e1d73d7bbacee02f59d8319.exe

pid	process
1840	4fd695d95e1d73d7bbacee02f59d8319.exe
1840	4fd695d95e1d73d7bbacee02f59d8319.exe
1840	4fd695d95e1d73d7bbacee02f59d8319.exe
1840	4fd695d95e1d73d7bbacee02f59d8319.exe
1840	4fd695d95e1d73d7bbacee02f59d8319.exe
1840	4fd695d95e1d73d7bbacee02f59d8319.exe
1840	4fd695d95e1d73d7bbacee02f59d8319.exe
1840	4fd695d95e1d73d7bbacee02f59d8319.exe
1840	4fd695d95e1d73d7bbacee02f59d8319.exe
1840	4fd695d95e1d73d7bbacee02f59d8319.exe
1840	4fd695d95e1d73d7bbacee02f59d8319.exe
1840	4fd695d95e1d73d7bbacee02f59d8319.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

4fd695d95e1d73d7bbacee02f59d8319.exe

description pid process target process

PID 1840 set thread context of 2100 1840 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

3944 1840 WerFault.exe 4fd695d95e1d73d7bbacee02f59d8319.exe
Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

1332 timeout.exe

description	pid	process	target process
PID 1840 set thread context of 2100	1840	4fd695d95e1d73d7bbacee02f59d8319.exe	4fd695d95e1d73d7bbacee02f59d8319.exe

pid	pid_target	process	target process
3944	1840	WerFault.exe	4fd695d95e1d73d7bbacee02f59d8319.exe

pid	process
1332	timeout.exe

Suspicious behavior: EnumeratesProcesses 17 IoCs

Processes:

4fd695d95e1d73d7bbacee02f59d8319.exeWerFault.exe

pid	process
1840	4fd695d95e1d73d7bbacee02f59d8319.exe
1840	4fd695d95e1d73d7bbacee02f59d8319.exe
1840	4fd695d95e1d73d7bbacee02f59d8319.exe
3944	WerFault.exe
3944	WerFault.exe
3944	WerFault.exe
3944	WerFault.exe
3944	WerFault.exe
3944	WerFault.exe
3944	WerFault.exe
3944	WerFault.exe
3944	WerFault.exe
3944	WerFault.exe
3944	WerFault.exe
3944	WerFault.exe
3944	WerFault.exe
3944	WerFault.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

Processes:

4fd695d95e1d73d7bbacee02f59d8319.exeWerFault.exe4fd695d95e1d73d7bbacee02f59d8319.exe

description	pid	process
Token: SeDebugPrivilege	1840	4fd695d95e1d73d7bbacee02f59d8319.exe
Token: SeRestorePrivilege	3944	WerFault.exe
Token: SeBackupPrivilege	3944	WerFault.exe
Token: SeDebugPrivilege	3944	WerFault.exe
Token: SeDebugPrivilege	2100	4fd695d95e1d73d7bbacee02f59d8319.exe

Suspicious use of WriteProcessMemory 14 IoCs

Processes:

4fd695d95e1d73d7bbacee02f59d8319.execmd.exe

description	pid	process	target process
PID 1840 wrote to memory of 3732	1840	4fd695d95e1d73d7bbacee02f59d8319.exe	cmd.exe
PID 1840 wrote to memory of 3732	1840	4fd695d95e1d73d7bbacee02f59d8319.exe	cmd.exe
PID 1840 wrote to memory of 3732	1840	4fd695d95e1d73d7bbacee02f59d8319.exe	cmd.exe
PID 3732 wrote to memory of 1332	3732	cmd.exe	timeout.exe
PID 3732 wrote to memory of 1332	3732	cmd.exe	timeout.exe
PID 3732 wrote to memory of 1332	3732	cmd.exe	timeout.exe
PID 1840 wrote to memory of 2100	1840	4fd695d95e1d73d7bbacee02f59d8319.exe	4fd695d95e1d73d7bbacee02f59d8319.exe
PID 1840 wrote to memory of 2100	1840	4fd695d95e1d73d7bbacee02f59d8319.exe	4fd695d95e1d73d7bbacee02f59d8319.exe
PID 1840 wrote to memory of 2100	1840	4fd695d95e1d73d7bbacee02f59d8319.exe	4fd695d95e1d73d7bbacee02f59d8319.exe
PID 1840 wrote to memory of 2100	1840	4fd695d95e1d73d7bbacee02f59d8319.exe	4fd695d95e1d73d7bbacee02f59d8319.exe
PID 1840 wrote to memory of 2100	1840	4fd695d95e1d73d7bbacee02f59d8319.exe	4fd695d95e1d73d7bbacee02f59d8319.exe
PID 1840 wrote to memory of 2100	1840	4fd695d95e1d73d7bbacee02f59d8319.exe	4fd695d95e1d73d7bbacee02f59d8319.exe
PID 1840 wrote to memory of 2100	1840	4fd695d95e1d73d7bbacee02f59d8319.exe	4fd695d95e1d73d7bbacee02f59d8319.exe
PID 1840 wrote to memory of 2100	1840	4fd695d95e1d73d7bbacee02f59d8319.exe	4fd695d95e1d73d7bbacee02f59d8319.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:1840

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c timeout 1
2⤵
- Suspicious use of WriteProcessMemory
PID:3732

C:\Windows\SysWOW64\timeout.exe
timeout 1
3⤵
- Delays execution with timeout.exe
PID:1332

C:\Users\Admin\AppData\Local\Temp\4fd695d95e1d73d7bbacee02f59d8319.exe
"C:\Users\Admin\AppData\Local\Temp\4fd695d95e1d73d7bbacee02f59d8319.exe"
2⤵
- Suspicious use of AdjustPrivilegeToken
PID:2100

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1840 -s 1460
2⤵
- Program crash
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3944

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/1332-120-0x0000000000000000-mapping.dmp

Download
memory/1840-114-0x0000000000A60000-0x0000000000A61000-memory.dmp

Filesize
4KB

Download
memory/1840-116-0x00000000053C0000-0x00000000053C1000-memory.dmp

Filesize
4KB

Download
memory/1840-117-0x0000000004E40000-0x0000000004E74000-memory.dmp

Filesize
208KB

Download
memory/1840-118-0x0000000002E20000-0x0000000002E21000-memory.dmp

Filesize
4KB

Download
memory/1840-121-0x0000000007640000-0x0000000007641000-memory.dmp

Filesize
4KB

Download
memory/2100-122-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2100-123-0x000000000040C70E-mapping.dmp

Download
memory/2100-126-0x0000000005250000-0x0000000005251000-memory.dmp

Filesize
4KB

Download
memory/2100-129-0x0000000005CE0000-0x0000000005CE1000-memory.dmp

Filesize
4KB

Download
memory/3732-119-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads