e7bea2a35dbd5eb6f5257515f5d75a24f4478c40cb8ba35a7420c5df39aafdfb

Analysis

max time kernel
1743s
max time network
1572s
platform
windows10-2004_x64
resource
win10v2004-20230220-en
resource tags

arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
submitted
08/06/2023, 20:06

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General

Target

K1.mp4
Size

1.1MB
MD5

abea9938c186b73027dc34574c8b4feb
SHA1

dc96fa1b41d10604af394c72d6881e4db5ce573d
SHA256

e7bea2a35dbd5eb6f5257515f5d75a24f4478c40cb8ba35a7420c5df39aafdfb
SHA512

d9a1874cc573d84e975d3ee3011293f357d730a4935acb5810dff1e5c55c888e6939ea6a15d52dfd93df88f87f4bbcb3fb7fc079ac3017b5dd13d1566c1e5e04
SSDEEP

24576:8KwVuZHSAsdI1iLPkCci7yRNemmMVWEktmrPZd+A6vJFiwnySI:8xVcHns7PtwnemngIPP+bkwnnI

Score

6^/10

Malware Config

Signatures

Enumerates connected drives 3 TTPs 24 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)	\??\A:	unregmp2.exe
File opened (read-only)	\??\O:	unregmp2.exe
File opened (read-only)	\??\Q:	unregmp2.exe
File opened (read-only)	\??\X:	unregmp2.exe
File opened (read-only)	\??\Y:	unregmp2.exe
File opened (read-only)	\??\B:	unregmp2.exe
File opened (read-only)	\??\F:	unregmp2.exe
File opened (read-only)	\??\H:	unregmp2.exe
File opened (read-only)	\??\J:	unregmp2.exe
File opened (read-only)	\??\L:	unregmp2.exe
File opened (read-only)	\??\R:	unregmp2.exe
File opened (read-only)	\??\K:	unregmp2.exe
File opened (read-only)	\??\S:	unregmp2.exe
File opened (read-only)	\??\Z:	unregmp2.exe
File opened (read-only)	\??\U:	unregmp2.exe
File opened (read-only)	\??\E:	unregmp2.exe
File opened (read-only)	\??\G:	unregmp2.exe
File opened (read-only)	\??\I:	unregmp2.exe
File opened (read-only)	\??\M:	unregmp2.exe
File opened (read-only)	\??\N:	unregmp2.exe
File opened (read-only)	\??\P:	unregmp2.exe
File opened (read-only)	\??\T:	unregmp2.exe
File opened (read-only)	\??\V:	unregmp2.exe
File opened (read-only)	\??\W:	unregmp2.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeShutdownPrivilege	2156	unregmp2.exe
Token: SeCreatePagefilePrivilege	2156	unregmp2.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 4812 wrote to memory of 4852	4812	wmplayer.exe	83
PID 4812 wrote to memory of 4852	4812	wmplayer.exe	83
PID 4812 wrote to memory of 4852	4812	wmplayer.exe	83
PID 4812 wrote to memory of 4532	4812	wmplayer.exe	84
PID 4812 wrote to memory of 4532	4812	wmplayer.exe	84
PID 4812 wrote to memory of 4532	4812	wmplayer.exe	84
PID 4532 wrote to memory of 2156	4532	unregmp2.exe	85
PID 4532 wrote to memory of 2156	4532	unregmp2.exe	85

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\K1.mp4"
1⤵
- Suspicious use of WriteProcessMemory
PID:4812
- 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\K1.mp4"
  2⤵
  PID:4852
- C:\Windows\SysWOW64\unregmp2.exe
  "C:\Windows\System32\unregmp2.exe" /AsyncFirstLogon
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4532
- - C:\Windows\system32\unregmp2.exe
    "C:\Windows\SysNative\unregmp2.exe" /AsyncFirstLogon /REENTRANT
    3⤵
    - Enumerates connected drives
    - Suspicious use of AdjustPrivilegeToken
    PID:2156

Network

MITRE ATT&CK Enterprise v6

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
64KB

MD5
fc240c081ec382df4b74d591d7d37a45

SHA1
396e9d8accb2ff8b32e6c3957808cb87d23ad47c

SHA256
8cfeb277627a0fc9f2596c83dc37f9a3d8871293cd88dadd08f32098bf936038

SHA512
d8f83773c330b88b43f9ebc6220aa98368854e44a75b73a8575e7171f6c32e784d404e5a2e2e7787d3c71c0cfecdbb983631b639d9fee879b374d498d2ef0ab7

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

Filesize
9KB

MD5
7050d5ae8acfbe560fa11073fef8185d

SHA1
5bc38e77ff06785fe0aec5a345c4ccd15752560e

SHA256
cb87767c4a384c24e4a0f88455f59101b1ae7b4fb8de8a5adb4136c5f7ee545b

SHA512
a7a295ac8921bb3dde58d4bcde9372ed59def61d4b7699057274960fa8c1d1a1daff834a93f7a0698e9e5c16db43af05e9fd2d6d7c9232f7d26ffcff5fc5900b

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

Filesize
1KB

MD5
f878ecc6bc9cca7537050c55bffd93d6

SHA1
9ffa48282a319c29a7ad212e9e6f3d8536bf32c9

SHA256
efb3dc1907af1a16ab45d67a07714d34198e1a3c3518dc2880bfa88cf01efe79

SHA512
47a34943e25f0d6022b937b2e44bf025f406b591e655f37f559d1b61d232d174f49366394d07f209700acf1500d0c4d2d3b3e3e3e9f38e0dadcfb0f04839399d

Download Submit