48f9ab4155a2030b27d3dcbc47eebbc7ba1f5bc412b1db50a8b05f3021145c4f

Analysis

max time kernel
121s
max time network
122s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
01/06/2024, 20:59

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General

Target

48f9ab4155a2030b27d3dcbc47eebbc7ba1f5bc412b1db50a8b05f3021145c4f.dll
Size

155KB
MD5

4a8026f3a583803d19d81f17e8fa81c5
SHA1

a39e59fc14a045e76ab9000b419e8a6723c9fde0
SHA256

48f9ab4155a2030b27d3dcbc47eebbc7ba1f5bc412b1db50a8b05f3021145c4f
SHA512

86c0ed92cd5e50fd94784f89d17d452ae1e88e477da1e2081d9becea0338e78d30b2d2e77369195324e245cae62a726ffb4724ef64f32f3418b8349dd40ee568
SSDEEP

3072:qlqY51dMOQDs9y2lQBV+UdE+rECWp7hKm/Du:m5IQ4BV+UdvrEFp7hKP

Score

9^/10

upx

Malware Config

Signatures

UPX dump on OEP (original entry point) 3 IoCs

resource	yara_rule
behavioral1/files/0x000f000000012248-1.dat	UPX
behavioral1/memory/3004-4-0x0000000000190000-0x00000000001C0000-memory.dmp	UPX
behavioral1/memory/3004-8-0x0000000000190000-0x00000000001C0000-memory.dmp	UPX

Blocklisted process makes network request 1 IoCs

flow	pid	Process
6	3004	rundll32.exe

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral1/files/0x000f000000012248-1.dat	acprotect

Loads dropped DLL 1 IoCs

pid	Process
3004	rundll32.exe

UPX packed file 3 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/files/0x000f000000012248-1.dat	upx
behavioral1/memory/3004-4-0x0000000000190000-0x00000000001C0000-memory.dmp	upx
behavioral1/memory/3004-8-0x0000000000190000-0x00000000001C0000-memory.dmp	upx

Enumerates connected drives 3 TTPs 1 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

description	ioc	Process
File opened (read-only)	\??\e:	rundll32.exe

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\System\symsrv.dll	rundll32.exe
File created	\??\c:\program files\common files\system\symsrv.dll.000	rundll32.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
3004	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3004	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2160 wrote to memory of 3004	2160	rundll32.exe	28
PID 2160 wrote to memory of 3004	2160	rundll32.exe	28
PID 2160 wrote to memory of 3004	2160	rundll32.exe	28
PID 2160 wrote to memory of 3004	2160	rundll32.exe	28
PID 2160 wrote to memory of 3004	2160	rundll32.exe	28
PID 2160 wrote to memory of 3004	2160	rundll32.exe	28
PID 2160 wrote to memory of 3004	2160	rundll32.exe	28

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\48f9ab4155a2030b27d3dcbc47eebbc7ba1f5bc412b1db50a8b05f3021145c4f.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2160
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\48f9ab4155a2030b27d3dcbc47eebbc7ba1f5bc412b1db50a8b05f3021145c4f.dll,#1
  2⤵
  - Blocklisted process makes network request
  - Loads dropped DLL
  - Enumerates connected drives
  - Drops file in Program Files directory
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3004

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

\Program Files\Common Files\System\symsrv.dll

Filesize
67KB

MD5
7574cf2c64f35161ab1292e2f532aabf

SHA1
14ba3fa927a06224dfe587014299e834def4644f

SHA256
de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085

SHA512
4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

Download Submit
memory/3004-5-0x0000000010000000-0x0000000010001000-memory.dmp

Filesize
4KB

Download
memory/3004-4-0x0000000000190000-0x00000000001C0000-memory.dmp

Filesize
192KB

Download
memory/3004-3-0x0000000010000000-0x0000000010014000-memory.dmp

Filesize
80KB

Download
memory/3004-8-0x0000000000190000-0x00000000001C0000-memory.dmp

Filesize
192KB

Download