asyncrat | 65b748276b7dea04af2f7f40ca1d08a1395c0de73734c82c581953b9213dc1a9

General

Target

Doc#662020094753525765678.exe
Size

301KB
MD5

9b70f0dee9fa7de571b2c08a6f3a9a75
SHA1

f3ad5f3cabe73c60c795c3367faaca682ddc1cc9
SHA256

249b086fbb970eefa5bc4c9bcebcda1e8a638ed82a1bbf1a106cfe3807e3e121
SHA512

2d47ea2d01e5643e5e5bec7e4b44e2c6cbc5c69f233bef27def943343403733a484baa58b90699f8ca29be52086750d505c47d876f8076ca363797be2f5badd7

Score

10^/10

asyncrat direct persistence rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

DIRECT

Mutex

chizzy25@@!7^UPCAZ

Attributes

delay
3
install
false
install_folder
%AppData%
pastebin_config
https://pastebin.com/raw/HKYwiN9V

aes.plain

Signatures

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

Async RAT payload 7 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/1492-73-0x0000000000080000-0x0000000000092000-memory.dmp	asyncrat
behavioral1/memory/1492-74-0x0000000000080000-0x0000000000092000-memory.dmp	asyncrat
behavioral1/memory/1492-76-0x000000000040C75E-mapping.dmp	asyncrat
behavioral1/memory/1492-79-0x0000000000080000-0x0000000000092000-memory.dmp	asyncrat
behavioral1/memory/1492-78-0x0000000000080000-0x0000000000092000-memory.dmp	asyncrat
behavioral1/memory/1492-83-0x0000000000080000-0x0000000000092000-memory.dmp	asyncrat
behavioral1/memory/1492-86-0x0000000000080000-0x0000000000092000-memory.dmp	asyncrat

Executes dropped EXE 2 IoCs

Processes:

dwrn.exeAddInProcess32.exe

pid process

1260 dwrn.exe
1492 AddInProcess32.exe
Loads dropped DLL 2 IoCs

Processes:

Doc#662020094753525765678.exedwrn.exe

pid process

2016 Doc#662020094753525765678.exe
1260 dwrn.exe

pid	process
1260	dwrn.exe
1492	AddInProcess32.exe

pid	process
2016	Doc#662020094753525765678.exe
1260	dwrn.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

reg.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows\CurrentVersion\Run	reg.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows\CurrentVersion\Run\ggxdtysjyux = "C:\\Windows\\system32\\pcalua.exe -a C:\\Users\\Admin\\AppData\\Roaming\\dwrn.exe"	reg.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs

Web Service
T1102
Suspicious use of SetThreadContext 1 IoCs

Processes:

dwrn.exe

description pid process target process

PID 1260 set thread context of 1492 1260 dwrn.exe AddInProcess32.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Suspicious behavior: EnumeratesProcesses 5 IoCs

Processes:

Doc#662020094753525765678.exedwrn.exe

pid process

2016 Doc#662020094753525765678.exe
2016 Doc#662020094753525765678.exe
1260 dwrn.exe
1260 dwrn.exe
1260 dwrn.exe

description	pid	process	target process
PID 1260 set thread context of 1492	1260	dwrn.exe	AddInProcess32.exe

pid	process
2016	Doc#662020094753525765678.exe
2016	Doc#662020094753525765678.exe
1260	dwrn.exe
1260	dwrn.exe
1260	dwrn.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

Doc#662020094753525765678.exedwrn.exeAddInProcess32.exe

description	pid	process
Token: SeDebugPrivilege	2016	Doc#662020094753525765678.exe
Token: SeDebugPrivilege	1260	dwrn.exe
Token: SeDebugPrivilege	1492	AddInProcess32.exe

Suspicious use of WriteProcessMemory 21 IoCs

Processes:

Doc#662020094753525765678.execmd.exedwrn.exe

description	pid	process	target process
PID 2016 wrote to memory of 1220	2016	Doc#662020094753525765678.exe	cmd.exe
PID 2016 wrote to memory of 1220	2016	Doc#662020094753525765678.exe	cmd.exe
PID 2016 wrote to memory of 1220	2016	Doc#662020094753525765678.exe	cmd.exe
PID 2016 wrote to memory of 1220	2016	Doc#662020094753525765678.exe	cmd.exe
PID 1220 wrote to memory of 1736	1220	cmd.exe	reg.exe
PID 1220 wrote to memory of 1736	1220	cmd.exe	reg.exe
PID 1220 wrote to memory of 1736	1220	cmd.exe	reg.exe
PID 1220 wrote to memory of 1736	1220	cmd.exe	reg.exe
PID 2016 wrote to memory of 1260	2016	Doc#662020094753525765678.exe	dwrn.exe
PID 2016 wrote to memory of 1260	2016	Doc#662020094753525765678.exe	dwrn.exe
PID 2016 wrote to memory of 1260	2016	Doc#662020094753525765678.exe	dwrn.exe
PID 2016 wrote to memory of 1260	2016	Doc#662020094753525765678.exe	dwrn.exe
PID 1260 wrote to memory of 1492	1260	dwrn.exe	AddInProcess32.exe
PID 1260 wrote to memory of 1492	1260	dwrn.exe	AddInProcess32.exe
PID 1260 wrote to memory of 1492	1260	dwrn.exe	AddInProcess32.exe
PID 1260 wrote to memory of 1492	1260	dwrn.exe	AddInProcess32.exe
PID 1260 wrote to memory of 1492	1260	dwrn.exe	AddInProcess32.exe
PID 1260 wrote to memory of 1492	1260	dwrn.exe	AddInProcess32.exe
PID 1260 wrote to memory of 1492	1260	dwrn.exe	AddInProcess32.exe
PID 1260 wrote to memory of 1492	1260	dwrn.exe	AddInProcess32.exe
PID 1260 wrote to memory of 1492	1260	dwrn.exe	AddInProcess32.exe

C:\Users\Admin\AppData\Local\Temp\Doc#662020094753525765678.exe
"C:\Users\Admin\AppData\Local\Temp\Doc#662020094753525765678.exe"
1⤵
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2016

C:\Windows\SysWOW64\cmd.exe
"cmd.exe" /c REG ADD HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run /f /v ggxdtysjyux /t REG_SZ /d C:\Windows\system32\pcalua.exe" -a C:\Users\Admin\AppData\Roaming\dwrn.exe"
2⤵
- Suspicious use of WriteProcessMemory
PID:1220

C:\Windows\SysWOW64\reg.exe
REG ADD HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run /f /v ggxdtysjyux /t REG_SZ /d C:\Windows\system32\pcalua.exe" -a C:\Users\Admin\AppData\Roaming\dwrn.exe"
3⤵
- Adds Run key to start application
PID:1736

C:\Users\Admin\AppData\Roaming\dwrn.exe
"C:\Users\Admin\AppData\Roaming\dwrn.exe"
2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1260

C:\Users\Admin\AppData\Local\Temp\AddInProcess32.exe
"C:\Users\Admin\AppData\Local\Temp\AddInProcess32.exe"
3⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1492

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Web Service

1

T1102

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\AddInProcess32.exe
Filesize
41KB

MD5
6a673bfc3b67ae9782cb31af2f234c68

SHA1
7544e89566d91e84e3cd437b9a073e5f6b56566e

SHA256
978a4093058aa2ebf05dc353897d90d950324389879b57741b64160825b5ec0e

SHA512
72c302372ce87ceda2a3c70a6005d3f9c112f1641bc7fe6824c718971233e66c07e2996d2785fa358566c38714c25ea812c05c7cfd2f588284849d495fd24f39

Download Submit
C:\Users\Admin\AppData\Local\Temp\AddInProcess32.exe
Filesize
41KB

MD5
6a673bfc3b67ae9782cb31af2f234c68

SHA1
7544e89566d91e84e3cd437b9a073e5f6b56566e

SHA256
978a4093058aa2ebf05dc353897d90d950324389879b57741b64160825b5ec0e

SHA512
72c302372ce87ceda2a3c70a6005d3f9c112f1641bc7fe6824c718971233e66c07e2996d2785fa358566c38714c25ea812c05c7cfd2f588284849d495fd24f39

Download Submit
C:\Users\Admin\AppData\Roaming\dwrn.exe
Filesize
301KB

MD5
9b70f0dee9fa7de571b2c08a6f3a9a75

SHA1
f3ad5f3cabe73c60c795c3367faaca682ddc1cc9

SHA256
249b086fbb970eefa5bc4c9bcebcda1e8a638ed82a1bbf1a106cfe3807e3e121

SHA512
2d47ea2d01e5643e5e5bec7e4b44e2c6cbc5c69f233bef27def943343403733a484baa58b90699f8ca29be52086750d505c47d876f8076ca363797be2f5badd7

Download Submit
C:\Users\Admin\AppData\Roaming\dwrn.exe
Filesize
301KB

MD5
9b70f0dee9fa7de571b2c08a6f3a9a75

SHA1
f3ad5f3cabe73c60c795c3367faaca682ddc1cc9

SHA256
249b086fbb970eefa5bc4c9bcebcda1e8a638ed82a1bbf1a106cfe3807e3e121

SHA512
2d47ea2d01e5643e5e5bec7e4b44e2c6cbc5c69f233bef27def943343403733a484baa58b90699f8ca29be52086750d505c47d876f8076ca363797be2f5badd7

Download Submit
\Users\Admin\AppData\Local\Temp\AddInProcess32.exe
Filesize
41KB

MD5
6a673bfc3b67ae9782cb31af2f234c68

SHA1
7544e89566d91e84e3cd437b9a073e5f6b56566e

SHA256
978a4093058aa2ebf05dc353897d90d950324389879b57741b64160825b5ec0e

SHA512
72c302372ce87ceda2a3c70a6005d3f9c112f1641bc7fe6824c718971233e66c07e2996d2785fa358566c38714c25ea812c05c7cfd2f588284849d495fd24f39

Download Submit
\Users\Admin\AppData\Roaming\dwrn.exe
Filesize
301KB

MD5
9b70f0dee9fa7de571b2c08a6f3a9a75

SHA1
f3ad5f3cabe73c60c795c3367faaca682ddc1cc9

SHA256
249b086fbb970eefa5bc4c9bcebcda1e8a638ed82a1bbf1a106cfe3807e3e121

SHA512
2d47ea2d01e5643e5e5bec7e4b44e2c6cbc5c69f233bef27def943343403733a484baa58b90699f8ca29be52086750d505c47d876f8076ca363797be2f5badd7

Download Submit
memory/1220-60-0x0000000000000000-mapping.dmp

Download
memory/1260-66-0x0000000000120000-0x0000000000170000-memory.dmp

Filesize
320KB

Download
memory/1260-63-0x0000000000000000-mapping.dmp

Download
memory/1492-76-0x000000000040C75E-mapping.dmp

Download
memory/1492-70-0x0000000000080000-0x0000000000092000-memory.dmp

Filesize
72KB

Download
memory/1492-86-0x0000000000080000-0x0000000000092000-memory.dmp

Filesize
72KB

Download
memory/1492-83-0x0000000000080000-0x0000000000092000-memory.dmp

Filesize
72KB

Download
memory/1492-73-0x0000000000080000-0x0000000000092000-memory.dmp

Filesize
72KB

Download
memory/1492-78-0x0000000000080000-0x0000000000092000-memory.dmp

Filesize
72KB

Download
memory/1492-79-0x0000000000080000-0x0000000000092000-memory.dmp

Filesize
72KB

Download
memory/1492-71-0x0000000000080000-0x0000000000092000-memory.dmp

Filesize
72KB

Download
memory/1492-74-0x0000000000080000-0x0000000000092000-memory.dmp

Filesize
72KB

Download
memory/1736-61-0x0000000000000000-mapping.dmp

Download
memory/2016-57-0x00000000009B0000-0x00000000009B8000-memory.dmp

Filesize
32KB

Download
memory/2016-55-0x00000000003D0000-0x00000000003E6000-memory.dmp

Filesize
88KB

Download
memory/2016-59-0x00000000009E0000-0x00000000009E8000-memory.dmp

Filesize
32KB

Download
memory/2016-56-0x00000000759F1000-0x00000000759F3000-memory.dmp

Filesize
8KB

Download
memory/2016-54-0x0000000000C90000-0x0000000000CE0000-memory.dmp

Filesize
320KB

Download
memory/2016-58-0x00000000009C0000-0x00000000009C8000-memory.dmp

Filesize
32KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads