8327f0e5ecc72e0e3fe07d9e6589c616bb06068c267f67c9f63b9e0ced9133c9

General

Target

8327f0e5ecc72e0e3fe07d9e6589c616bb06068c267f67c9f63b9e0ced9133c9.exe
Size

115KB
MD5

8d1b0995d6b3466d9d0e367a2f82ffe6
SHA1

2fb684536e8097f43016b23cad34ab1b56632323
SHA256

8327f0e5ecc72e0e3fe07d9e6589c616bb06068c267f67c9f63b9e0ced9133c9
SHA512

ca3ff270fc54fca515f59c9354d076fa643850db98fd1099a0ac74693d503ac7a9c5680132225359c3a77fd1ef4db6ee4d0f7ac31668e1c5468dbd73818a45ae
SSDEEP

1536:aJUGCqveEeXdTeG4wu6oQuwEhQQWKXJR721rSTdk/cpAKdlaKrorkgA55i:aHFveEyTAK7VKXXS1GT7AKzaKrtP55i

Score

9^/10

aspackv2 bootkit persistence spyware stealer

Malware Config

Signatures

Detects executables containing base64 encoded User Agent 9 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2476-17-0x0000000010000000-0x0000000010036000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral1/memory/2476-18-0x0000000010000000-0x0000000010036000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral1/memory/2476-16-0x0000000010000000-0x0000000010036000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral1/memory/2476-19-0x0000000010000000-0x0000000010036000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral1/memory/2476-20-0x0000000010000000-0x0000000010036000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral1/memory/2476-24-0x0000000010000000-0x0000000010036000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral1/memory/2476-25-0x0000000010000000-0x0000000010036000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral1/memory/2476-26-0x0000000010000000-0x0000000010036000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral1/memory/2476-28-0x0000000010000000-0x0000000010036000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

Blocklisted process makes network request 10 IoCs

Processes:

rundll32.exe

flow	pid	process
3	2476	rundll32.exe
6	2476	rundll32.exe
8	2476	rundll32.exe
9	2476	rundll32.exe
10	2476	rundll32.exe
13	2476	rundll32.exe
14	2476	rundll32.exe
15	2476	rundll32.exe
17	2476	rundll32.exe
18	2476	rundll32.exe

ASPack v2.12-2.42 1 IoCs

Detects executables packed with ASPack v2.12-2.42

aspackv2

Processes:

resource	yara_rule
\??\c:\rzhni\crzvp.dll	aspack_v212_v242

Deletes itself 1 IoCs

Processes:

fhbkym.exe

pid process

2104 fhbkym.exe
Executes dropped EXE 1 IoCs

Processes:

fhbkym.exe

pid process

2104 fhbkym.exe
Loads dropped DLL 4 IoCs

Processes:

rundll32.exe

pid process

2476 rundll32.exe
2476 rundll32.exe
2476 rundll32.exe
2476 rundll32.exe
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

pid	process
2104	fhbkym.exe

pid	process
2104	fhbkym.exe

pid	process
2476	rundll32.exe
2476	rundll32.exe
2476	rundll32.exe
2476	rundll32.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

rundll32.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Run\EvtMgr = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\rzhni\\crzvp.dll\",AbortProc"	rundll32.exe

Enumerates connected drives 3 TTPs 23 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Processes:

rundll32.exe

description	ioc	process
File opened (read-only)	\??\t:	rundll32.exe
File opened (read-only)	\??\v:	rundll32.exe
File opened (read-only)	\??\j:	rundll32.exe
File opened (read-only)	\??\b:	rundll32.exe
File opened (read-only)	\??\g:	rundll32.exe
File opened (read-only)	\??\h:	rundll32.exe
File opened (read-only)	\??\p:	rundll32.exe
File opened (read-only)	\??\s:	rundll32.exe
File opened (read-only)	\??\x:	rundll32.exe
File opened (read-only)	\??\y:	rundll32.exe
File opened (read-only)	\??\a:	rundll32.exe
File opened (read-only)	\??\z:	rundll32.exe
File opened (read-only)	\??\o:	rundll32.exe
File opened (read-only)	\??\r:	rundll32.exe
File opened (read-only)	\??\u:	rundll32.exe
File opened (read-only)	\??\k:	rundll32.exe
File opened (read-only)	\??\i:	rundll32.exe
File opened (read-only)	\??\l:	rundll32.exe
File opened (read-only)	\??\m:	rundll32.exe
File opened (read-only)	\??\n:	rundll32.exe
File opened (read-only)	\??\q:	rundll32.exe
File opened (read-only)	\??\w:	rundll32.exe
File opened (read-only)	\??\e:	rundll32.exe

Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs
Bootkits write to the MBR to gain persistence at a level below the operating system.
bootkit persistence

Bootkit
T1542.003

Processes:

rundll32.exe

description ioc process

File opened for modification \??\PHYSICALDRIVE0 rundll32.exe

description	ioc	process
File opened for modification	\??\PHYSICALDRIVE0	rundll32.exe

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

rundll32.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	rundll32.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery
T1018

Processes:

PING.EXE

pid process

2992 PING.EXE
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

rundll32.exe

pid process

2476 rundll32.exe
2476 rundll32.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

rundll32.exe

description pid process

Token: SeDebugPrivilege 2476 rundll32.exe
Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

8327f0e5ecc72e0e3fe07d9e6589c616bb06068c267f67c9f63b9e0ced9133c9.exefhbkym.exe

pid process

1692 8327f0e5ecc72e0e3fe07d9e6589c616bb06068c267f67c9f63b9e0ced9133c9.exe
2104 fhbkym.exe

pid	process
2992	PING.EXE

pid	process
2476	rundll32.exe
2476	rundll32.exe

description	pid	process
Token: SeDebugPrivilege	2476	rundll32.exe

pid	process
1692	8327f0e5ecc72e0e3fe07d9e6589c616bb06068c267f67c9f63b9e0ced9133c9.exe
2104	fhbkym.exe

Suspicious use of WriteProcessMemory 19 IoCs

Processes:

8327f0e5ecc72e0e3fe07d9e6589c616bb06068c267f67c9f63b9e0ced9133c9.execmd.exefhbkym.exe

description	pid	process	target process
PID 1692 wrote to memory of 2180	1692	8327f0e5ecc72e0e3fe07d9e6589c616bb06068c267f67c9f63b9e0ced9133c9.exe	cmd.exe
PID 1692 wrote to memory of 2180	1692	8327f0e5ecc72e0e3fe07d9e6589c616bb06068c267f67c9f63b9e0ced9133c9.exe	cmd.exe
PID 1692 wrote to memory of 2180	1692	8327f0e5ecc72e0e3fe07d9e6589c616bb06068c267f67c9f63b9e0ced9133c9.exe	cmd.exe
PID 1692 wrote to memory of 2180	1692	8327f0e5ecc72e0e3fe07d9e6589c616bb06068c267f67c9f63b9e0ced9133c9.exe	cmd.exe
PID 2180 wrote to memory of 2992	2180	cmd.exe	PING.EXE
PID 2180 wrote to memory of 2992	2180	cmd.exe	PING.EXE
PID 2180 wrote to memory of 2992	2180	cmd.exe	PING.EXE
PID 2180 wrote to memory of 2992	2180	cmd.exe	PING.EXE
PID 2180 wrote to memory of 2104	2180	cmd.exe	fhbkym.exe
PID 2180 wrote to memory of 2104	2180	cmd.exe	fhbkym.exe
PID 2180 wrote to memory of 2104	2180	cmd.exe	fhbkym.exe
PID 2180 wrote to memory of 2104	2180	cmd.exe	fhbkym.exe
PID 2104 wrote to memory of 2476	2104	fhbkym.exe	rundll32.exe
PID 2104 wrote to memory of 2476	2104	fhbkym.exe	rundll32.exe
PID 2104 wrote to memory of 2476	2104	fhbkym.exe	rundll32.exe
PID 2104 wrote to memory of 2476	2104	fhbkym.exe	rundll32.exe
PID 2104 wrote to memory of 2476	2104	fhbkym.exe	rundll32.exe
PID 2104 wrote to memory of 2476	2104	fhbkym.exe	rundll32.exe
PID 2104 wrote to memory of 2476	2104	fhbkym.exe	rundll32.exe

C:\Users\Admin\AppData\Local\Temp\8327f0e5ecc72e0e3fe07d9e6589c616bb06068c267f67c9f63b9e0ced9133c9.exe
"C:\Users\Admin\AppData\Local\Temp\8327f0e5ecc72e0e3fe07d9e6589c616bb06068c267f67c9f63b9e0ced9133c9.exe"
1⤵
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1692

C:\Windows\SysWOW64\cmd.exe
cmd.exe /c ping 127.0.0.1 -n 2&c:\fhbkym.exe "C:\Users\Admin\AppData\Local\Temp\8327f0e5ecc72e0e3fe07d9e6589c616bb06068c267f67c9f63b9e0ced9133c9.exe"
2⤵
- Suspicious use of WriteProcessMemory
PID:2180

C:\Windows\SysWOW64\PING.EXE
ping 127.0.0.1 -n 2
3⤵
- Runs ping.exe
PID:2992

\??\c:\fhbkym.exe
c:\fhbkym.exe "C:\Users\Admin\AppData\Local\Temp\8327f0e5ecc72e0e3fe07d9e6589c616bb06068c267f67c9f63b9e0ced9133c9.exe"
3⤵
- Deletes itself
- Executes dropped EXE
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2104

\??\c:\windows\SysWOW64\rundll32.exe
c:\windows\system32\rundll32.exe "c:\rzhni\crzvp.dll",AbortProc c:\fhbkym.exe
4⤵
- Blocklisted process makes network request
- Loads dropped DLL
- Adds Run key to start application
- Enumerates connected drives
- Writes to the Master Boot Record (MBR)
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2476

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Pre-OS Boot

1

T1542

Bootkit

1

T1542.003

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Pre-OS Boot

1

T1542

Bootkit

1

T1542.003

Credential Access

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Query Registry

2

T1012

Peripheral Device Discovery

1

T1120

System Information Discovery

2

T1082

Remote System Discovery

1

T1018

Lateral Movement

Collection

Data from Local System

1

T1005

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

\??\c:\fhbkym.exe
Filesize
115KB

MD5
3af6a22acf6d5091a3408a3c199c48f2

SHA1
9a38b054a41ed9ce90d47e7356312ac1075cd3dc

SHA256
8092ffef4867b7dfa2d54b2667b081105c751bc89363df033899ffb0e780b48c

SHA512
d10d5bd9d32e0f1a17915f1ed0c3c0dc53ac2b8dbdac43afc56996c14ca2b36288b43aa0b0963cbaa7cc5ccb5c96a5b5181dafdc15c6ebae55b5e164712ac54d

Download Submit
\??\c:\rzhni\crzvp.dll
Filesize
87KB

MD5
a2c2137ff7abf6be6bcae4252c394a69

SHA1
07b402104df563f9486c2eef975fee70f65a5145

SHA256
37ab4b7ee8f6b61c3854af4ed4676fd0d69f0260fb1296ad75e57aa08e1eeb03

SHA512
5d05ed7c55bee8f41502acaea3d41fcf4421ad641d43f0b97b4cdc8fe584983da7712c561a53b708e88391df7929914746115700ae733155418693bcec6989a9

Download Submit
memory/1692-0-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download
memory/1692-2-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download
memory/2104-8-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download
memory/2180-4-0x0000000000130000-0x0000000000158000-memory.dmp

Filesize
160KB

Download
memory/2180-5-0x0000000000130000-0x0000000000158000-memory.dmp

Filesize
160KB

Download
memory/2476-15-0x0000000010000000-0x0000000010036000-memory.dmp

Filesize
216KB

Download
memory/2476-14-0x0000000010000000-0x0000000010036000-memory.dmp

Filesize
216KB

Download
memory/2476-17-0x0000000010000000-0x0000000010036000-memory.dmp

Filesize
216KB

Download
memory/2476-18-0x0000000010000000-0x0000000010036000-memory.dmp

Filesize
216KB

Download
memory/2476-16-0x0000000010000000-0x0000000010036000-memory.dmp

Filesize
216KB

Download
memory/2476-19-0x0000000010000000-0x0000000010036000-memory.dmp

Filesize
216KB

Download
memory/2476-20-0x0000000010000000-0x0000000010036000-memory.dmp

Filesize
216KB

Download
memory/2476-24-0x0000000010000000-0x0000000010036000-memory.dmp

Filesize
216KB

Download
memory/2476-25-0x0000000010000000-0x0000000010036000-memory.dmp

Filesize
216KB

Download
memory/2476-26-0x0000000010000000-0x0000000010036000-memory.dmp

Filesize
216KB

Download
memory/2476-28-0x0000000010000000-0x0000000010036000-memory.dmp

Filesize
216KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads