2e4f1adcedd82306e9c6a35ac2b1abb2ab969f29d9a84d4d9a8d46140f34d25f

Analysis

max time kernel
167s
max time network
174s
platform
windows10-2004_x64
resource
win10v2004-20231020-en
resource tags

arch:x64arch:x86image:win10v2004-20231020-enlocale:en-usos:windows10-2004-x64system
submitted
31/10/2023, 11:57

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General

Target

4601-fvr-master-2.mp3
Size

10.1MB
MD5

cb3d25722564c7e0b33fcc4e7ada7ec2
SHA1

70c5fc5fcec6ecb9c3a1fe114de21327a8a99146
SHA256

2e4f1adcedd82306e9c6a35ac2b1abb2ab969f29d9a84d4d9a8d46140f34d25f
SHA512

fd35b01928cec182719fe724cc70f4e2637fd334a6ba8a7fd82117320a0c57bfdb3273466328a45cfd56e0edf577f4f1bb8521bd6a987fcc45df7951e07d70d8
SSDEEP

196608:r3yf10mzN+fwSzJ3UOMclf9yQfYiAUy7xLpgSLv/tOo:rCfBvS1dMg3YiAUy7xSen

Score

6^/10

Malware Config

Signatures

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

description	ioc	Process
File opened (read-only)	\??\B:	unregmp2.exe
File opened (read-only)	\??\H:	unregmp2.exe
File opened (read-only)	\??\S:	unregmp2.exe
File opened (read-only)	\??\T:	unregmp2.exe
File opened (read-only)	\??\W:	unregmp2.exe
File opened (read-only)	\??\I:	unregmp2.exe
File opened (read-only)	\??\J:	unregmp2.exe
File opened (read-only)	\??\K:	unregmp2.exe
File opened (read-only)	\??\M:	unregmp2.exe
File opened (read-only)	\??\P:	unregmp2.exe
File opened (read-only)	\??\R:	unregmp2.exe
File opened (read-only)	\??\V:	unregmp2.exe
File opened (read-only)	\??\G:	unregmp2.exe
File opened (read-only)	\??\L:	unregmp2.exe
File opened (read-only)	\??\N:	unregmp2.exe
File opened (read-only)	\??\O:	unregmp2.exe
File opened (read-only)	\??\U:	unregmp2.exe
File opened (read-only)	\??\Z:	unregmp2.exe
File opened (read-only)	\??\A:	unregmp2.exe
File opened (read-only)	\??\E:	unregmp2.exe
File opened (read-only)	\??\Q:	unregmp2.exe
File opened (read-only)	\??\X:	unregmp2.exe
File opened (read-only)	\??\Y:	unregmp2.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeShutdownPrivilege	3728	unregmp2.exe
Token: SeCreatePagefilePrivilege	3728	unregmp2.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1572 wrote to memory of 920	1572	wmplayer.exe	90
PID 1572 wrote to memory of 920	1572	wmplayer.exe	90
PID 1572 wrote to memory of 920	1572	wmplayer.exe	90
PID 1572 wrote to memory of 4492	1572	wmplayer.exe	91
PID 1572 wrote to memory of 4492	1572	wmplayer.exe	91
PID 1572 wrote to memory of 4492	1572	wmplayer.exe	91
PID 4492 wrote to memory of 3728	4492	unregmp2.exe	92
PID 4492 wrote to memory of 3728	4492	unregmp2.exe	92

C:\Program Files (x86)\Windows Media Player\wmplayer.exe
"C:\Program Files (x86)\Windows Media Player\wmplayer.exe" /prefetch:6 /Open "C:\Users\Admin\AppData\Local\Temp\4601-fvr-master-2.mp3"
1⤵
- Suspicious use of WriteProcessMemory
PID:1572
- C:\Program Files (x86)\Windows Media Player\setup_wm.exe
  "C:\Program Files (x86)\Windows Media Player\setup_wm.exe" /RunOnce:"C:\Program Files (x86)\Windows Media Player\wmplayer.exe" /prefetch:6 /Open "C:\Users\Admin\AppData\Local\Temp\4601-fvr-master-2.mp3"
  2⤵
  PID:920
- C:\Windows\SysWOW64\unregmp2.exe
  "C:\Windows\System32\unregmp2.exe" /AsyncFirstLogon
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4492
- - C:\Windows\system32\unregmp2.exe
    "C:\Windows\SysNative\unregmp2.exe" /AsyncFirstLogon /REENTRANT
    3⤵
    - Enumerates connected drives
    - Suspicious use of AdjustPrivilegeToken
    PID:3728

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

C:\Users\Admin\AppData\Local\Microsoft\Media Player\CurrentDatabase_400.wmdb

Filesize
256KB

MD5
41e020ee798eceb4ac90cba2142a7a1b

SHA1
714ffdf4ddc441ae72c3fb2e4548a8219ad06fb8

SHA256
60968b6f285adc7f7347c43815c17a27a383807366f91212b81b17cac20131a8

SHA512
29d22703589df058c7f3509ce58f8e2f8fdf1fc2077e0622a796e4f9c17e563994e3cce83d74b5d58d79ae5b335a1e114c86ca7fe149bab10c3656c0acb0ae76

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C:\Users\Admin\AppData\Local\Microsoft\Windows Media\12.0\WMSDKNS.XML.bak

Filesize
9KB

MD5
7050d5ae8acfbe560fa11073fef8185d

SHA1
5bc38e77ff06785fe0aec5a345c4ccd15752560e

SHA256
cb87767c4a384c24e4a0f88455f59101b1ae7b4fb8de8a5adb4136c5f7ee545b

SHA512
a7a295ac8921bb3dde58d4bcde9372ed59def61d4b7699057274960fa8c1d1a1daff834a93f7a0698e9e5c16db43af05e9fd2d6d7c9232f7d26ffcff5fc5900b

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C:\Users\Admin\AppData\Local\Temp\wmsetup.log

Filesize
1KB

MD5
fb81cb3f6575c79b40a396bff611318a

SHA1
3cb4f61c1e1a508584cf7f21d4107b2677469653

SHA256
d86fa601b8ea8aa514444e827f0f5a13f02c820dbc1f9ba72dc3ca0a59f91196

SHA512
ce6cd74f6e3a64c5f44b66e9b776b2b32b3543ab0e122ec0c3ec5aeba727c24d67b63b79d17a0aec91544c7bb22230ba22489d87716214a63be726bdecbebbe6

Download Submit