asyncrat | 70fc07dc94b74d022853142d3df555cf7189680ea37b42187ac20ea1ecc2449b

Analysis

max time kernel
151s
max time network
155s
platform
windows7_x64
resource
win7-20230220-en
resource tags

arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
submitted
16/04/2023, 13:34

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General

Target

DcRat/DcRat.exe
Size

21.6MB
MD5

86f3de7b3546c538291820eb6f1d3d32
SHA1

4b0994b910d67990c855b669f4124e6ebbbc0343
SHA256

533c45a3400cceaf13703564aa125c4a17b613ea0964d140be0415d7df4f644b
SHA512

002449d99933ee6a61059a2722a2b75f5358b987f4853a93ef0dd5c0b5724835c449a810450f1d2ba6cb5114a106c8f05fbad2137b3c0b3c851663fa1a00d244
SSDEEP

393216:q/nGTBP+Zw6NLIsFfskh1BmXGR1Bd+/2:q/GTBP+Zlnk0rmoBY

Score

10^/10

asyncrat rat

Malware Config

Signatures

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
behavioral1/memory/1156-54-0x0000000001390000-0x000000000292E000-memory.dmp	asyncrat

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

System Information Discovery
T1082

Modifies registry class 37 IoCs

description	ioc	Process
Set value (data)	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\0\0\0\0\MRUListEx = ffffffff	DcRat.exe
Key created	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell	DcRat.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots	DcRat.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0 = 74003100000000005456d0961100557365727300600008000400efbeee3a851a5456d0962a000000e601000000000100000000000000000036000000000055007300650072007300000040007300680065006c006c00330032002e0064006c006c002c002d0032003100380031003300000014000000	DcRat.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\0\0\MRUListEx = 00000000ffffffff	DcRat.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\0\0\0\0\NodeSlot = "1"	DcRat.exe
Key created	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU	DcRat.exe
Key created	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0	DcRat.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0 = 4c00310000000000545626a2100041646d696e00380008000400efbe5456d096545626a22a0000002e000000000004000000000000000000000000000000410064006d0069006e00000014000000	DcRat.exe
Key created	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0	DcRat.exe
Key created	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\0\0\0\0	DcRat.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0 = 14001f50e04fd020ea3a6910a2d808002b30309d0000	DcRat.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\0\MRUListEx = 00000000ffffffff	DcRat.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\0\0\0\0 = 4c0031000000000090568a7c1020446352617400380008000400efbe90568a7c90568a7c2a0000003931010000000800000000000000000000000000000044006300520061007400000014000000	DcRat.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\0\0\0\MRUListEx = 00000000ffffffff	DcRat.exe
Key created	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags	DcRat.exe
Key created	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\0\0	DcRat.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\Shell\SniffedFolderType = "Generic"	DcRat.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = ffffffff	DcRat.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0 = 19002f433a5c000000000000000000000000000000000000000000	DcRat.exe
Key created	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\0	DcRat.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots = 02	DcRat.exe
Key created	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\1	DcRat.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\Shell\KnownFolderDerivedFolderType = "{57807898-8C4F-4462-BB63-71042380B109}"	DcRat.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\MRUListEx = 00000000ffffffff	DcRat.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\0 = 52003100000000005456d096122041707044617461003c0008000400efbe5456d0965456d0962a000000e90100000000020000000000000000000000000000004100700070004400610074006100000016000000	DcRat.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\MRUListEx = 00000000ffffffff	DcRat.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\0\0\0 = 4a0031000000000090568a7c102054656d700000360008000400efbe5456d09690568a7c2a000000fd010000000002000000000000000000000000000000540065006d007000000014000000	DcRat.exe
Key created	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\0\0\0	DcRat.exe
Key created	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000_Classes\Local Settings	DcRat.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\MRUListEx = 00000000ffffffff	DcRat.exe
Key created	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0	DcRat.exe
Key created	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0	DcRat.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = 00000000ffffffff	DcRat.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\MRUListEx = 00000000ffffffff	DcRat.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\0\0 = 4c003100000000009056a47c10204c6f63616c00380008000400efbe5456d0969056a47c2a000000fc0100000000020000000000000000000000000000004c006f00630061006c00000014000000	DcRat.exe
Key created	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\Shell	DcRat.exe

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
1156	DcRat.exe
1156	DcRat.exe
1156	DcRat.exe
1156	DcRat.exe
1156	DcRat.exe
1156	DcRat.exe
1156	DcRat.exe
1156	DcRat.exe
1156	DcRat.exe
1156	DcRat.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1156	DcRat.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1156	DcRat.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
1156	DcRat.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
1156	DcRat.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1156	DcRat.exe

C:\Users\Admin\AppData\Local\Temp\DcRat\DcRat.exe
"C:\Users\Admin\AppData\Local\Temp\DcRat\DcRat.exe"
1⤵
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of SetWindowsHookEx
PID:1156

C:\Windows\system32\wbem\WmiApSrv.exe
C:\Windows\system32\wbem\WmiApSrv.exe
1⤵
PID:580

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1156-54-0x0000000001390000-0x000000000292E000-memory.dmp

Filesize
21.6MB

Download
memory/1156-55-0x000000001C680000-0x000000001C700000-memory.dmp

Filesize
512KB

Download
memory/1156-56-0x000000001C680000-0x000000001C700000-memory.dmp

Filesize
512KB

Download
memory/1156-57-0x000000001C680000-0x000000001C700000-memory.dmp

Filesize
512KB

Download
memory/1156-60-0x000000001C680000-0x000000001C700000-memory.dmp

Filesize
512KB

Download
memory/1156-61-0x000000001C680000-0x000000001C700000-memory.dmp

Filesize
512KB

Download
memory/1156-62-0x000000001C680000-0x000000001C700000-memory.dmp

Filesize
512KB

Download
memory/1156-66-0x000000001C680000-0x000000001C700000-memory.dmp

Filesize
512KB

Download
memory/1156-67-0x000000001C680000-0x000000001C700000-memory.dmp

Filesize
512KB

Download
memory/1156-74-0x000000001C680000-0x000000001C700000-memory.dmp

Filesize
512KB

Download
memory/1156-75-0x00000000207D0000-0x00000000207E0000-memory.dmp

Filesize
64KB

Download
memory/1156-76-0x00000000203C0000-0x00000000203C1000-memory.dmp

Filesize
4KB

Download