a906f5e2277db56cf53f90d87f13b67d1c817e926866488b410c653711a15d23

Analysis

max time kernel
93s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
03-09-2024 16:54

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General

Target

Content-Warning-FixOnly.V4.rar
Size

10.8MB
MD5

c72c0720ec5b6b091f1ade7b408fa798
SHA1

3d0ce47719c1c4a74b05cf15d51ec50c6b419a0d
SHA256

a906f5e2277db56cf53f90d87f13b67d1c817e926866488b410c653711a15d23
SHA512

a1ad62c29974f81bebb4b7d50c4639e62a6e4ce9cd8ee49354a9ddc0e1225ebc322fcdedb75443bebf0829349adfb580d143095941d5e99719e11b05021525af
SSDEEP

196608:U7yW9CpOAu8UfXczS5C0FBswYRjcxlM3lrVYxNtiQRtB8DmaS5LEJSyLak8yKR9c:U7LMUfXKSglRjcxlM3lxeiQRWuEJmk8W

Score

6^/10

discovery

Malware Config

Signatures

Drops desktop.ini file(s) 7 IoCs

description	ioc	Process
File opened for modification	C:\Users\Public\desktop.ini	wmplayer.exe
File opened for modification	C:\Users\Public\Music\desktop.ini	wmplayer.exe
File opened for modification	C:\Users\Admin\Videos\desktop.ini	wmplayer.exe
File opened for modification	C:\Users\Public\Videos\desktop.ini	wmplayer.exe
File opened for modification	C:\Users\Admin\Pictures\desktop.ini	wmplayer.exe
File opened for modification	C:\Users\Public\Pictures\desktop.ini	wmplayer.exe
File opened for modification	C:\Users\Admin\Music\desktop.ini	wmplayer.exe

Enumerates connected drives 3 TTPs 46 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)	\??\E:	wmplayer.exe
File opened (read-only)	\??\G:	wmplayer.exe
File opened (read-only)	\??\X:	wmplayer.exe
File opened (read-only)	\??\Y:	wmplayer.exe
File opened (read-only)	\??\Z:	wmplayer.exe
File opened (read-only)	\??\E:	unregmp2.exe
File opened (read-only)	\??\B:	wmplayer.exe
File opened (read-only)	\??\I:	wmplayer.exe
File opened (read-only)	\??\T:	wmplayer.exe
File opened (read-only)	\??\B:	unregmp2.exe
File opened (read-only)	\??\I:	unregmp2.exe
File opened (read-only)	\??\J:	unregmp2.exe
File opened (read-only)	\??\R:	unregmp2.exe
File opened (read-only)	\??\Z:	unregmp2.exe
File opened (read-only)	\??\H:	wmplayer.exe
File opened (read-only)	\??\L:	wmplayer.exe
File opened (read-only)	\??\M:	unregmp2.exe
File opened (read-only)	\??\P:	unregmp2.exe
File opened (read-only)	\??\Q:	unregmp2.exe
File opened (read-only)	\??\V:	unregmp2.exe
File opened (read-only)	\??\X:	unregmp2.exe
File opened (read-only)	\??\W:	wmplayer.exe
File opened (read-only)	\??\H:	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)	\??\S:	unregmp2.exe
File opened (read-only)	\??\Q:	wmplayer.exe
File opened (read-only)	\??\V:	wmplayer.exe
File opened (read-only)	\??\G:	unregmp2.exe
File opened (read-only)	\??\U:	unregmp2.exe
File opened (read-only)	\??\J:	wmplayer.exe
File opened (read-only)	\??\O:	wmplayer.exe
File opened (read-only)	\??\R:	wmplayer.exe
File opened (read-only)	\??\S:	wmplayer.exe
File opened (read-only)	\??\U:	wmplayer.exe
File opened (read-only)	\??\T:	unregmp2.exe
File opened (read-only)	\??\K:	wmplayer.exe
File opened (read-only)	\??\N:	wmplayer.exe
File opened (read-only)	\??\K:	unregmp2.exe
File opened (read-only)	\??\W:	unregmp2.exe
File opened (read-only)	\??\Y:	unregmp2.exe
File opened (read-only)	\??\A:	wmplayer.exe
File opened (read-only)	\??\M:	wmplayer.exe
File opened (read-only)	\??\P:	wmplayer.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\ServiceProfiles\LocalService\AppData\Roaming\Microsoft\UPnP Device Host\upnphost\udhisapi.dll	svchost.exe
File opened for modification	C:\Windows\ServiceProfiles\LocalService\AppData\Roaming\Microsoft\UPnP Device Host\upnphost\udhisapi.dll	svchost.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2620	4032	WerFault.exe	104

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	unregmp2.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wmplayer.exe

Modifies registry class 2 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-786284298-625481688-3210388970-1000_Classes\Local Settings	cmd.exe
Key created	\REGISTRY\USER\S-1-5-21-786284298-625481688-3210388970-1000_Classes\Local Settings	OpenWith.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
4704	OpenWith.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeShutdownPrivilege	4032	wmplayer.exe
Token: SeCreatePagefilePrivilege	4032	wmplayer.exe
Token: SeShutdownPrivilege	956	unregmp2.exe
Token: SeCreatePagefilePrivilege	956	unregmp2.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
4032	wmplayer.exe

Suspicious use of SetWindowsHookEx 13 IoCs

pid	Process
4704	OpenWith.exe
4704	OpenWith.exe
4704	OpenWith.exe
4704	OpenWith.exe
4704	OpenWith.exe
4704	OpenWith.exe
4704	OpenWith.exe
4704	OpenWith.exe
4704	OpenWith.exe
4704	OpenWith.exe
4704	OpenWith.exe
4704	OpenWith.exe
4704	OpenWith.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 4032 wrote to memory of 4824	4032	wmplayer.exe	105
PID 4032 wrote to memory of 4824	4032	wmplayer.exe	105
PID 4032 wrote to memory of 4824	4032	wmplayer.exe	105
PID 4824 wrote to memory of 956	4824	unregmp2.exe	106
PID 4824 wrote to memory of 956	4824	unregmp2.exe	106

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\Content-Warning-FixOnly.V4.rar
1⤵
- Modifies registry class
PID:1656

C:\Windows\system32\OpenWith.exe
C:\Windows\system32\OpenWith.exe -Embedding
1⤵
- Modifies registry class
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
PID:4704

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
1⤵
PID:4228

C:\Program Files (x86)\Windows Media Player\wmplayer.exe
"C:\Program Files (x86)\Windows Media Player\wmplayer.exe" /Play -Embedding
1⤵
- Drops desktop.ini file(s)
- Enumerates connected drives
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:4032
- C:\Windows\SysWOW64\unregmp2.exe
  "C:\Windows\System32\unregmp2.exe" /AsyncFirstLogon
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4824
- - C:\Windows\system32\unregmp2.exe
    "C:\Windows\SysNative\unregmp2.exe" /AsyncFirstLogon /REENTRANT
    3⤵
    - Enumerates connected drives
    - Suspicious use of AdjustPrivilegeToken
    PID:956
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4032 -s 2164
  2⤵
  - Program crash
  PID:2620

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalServiceAndNoImpersonation -p -s upnphost
1⤵
- Drops file in Windows directory
PID:3880

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4032 -ip 4032
1⤵
PID:4028

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

System Location Discovery

T1614

System Language Discovery

T1614.001

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
563088ad0f20fabf9dd62c6ba8ae1636

SHA1
f9cd2fd153afa1a12ff990cf27c32b8c9c44e878

SHA256
eb897bf202d32f067728f1b666eb16e9926557efa8676b72db11411013030184

SHA512
8229dfb1d96b6a34b91b1e5c463833e7859331be880f585c48af1ba0ace0465ac755c7f22a9e6f30284266165f850e8f85af76157eea8136b2d6f79db02d3092

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

Filesize
1024KB

MD5
f56680100d400fc89e1dc43ec7f6a245

SHA1
6936062d53e052ae507beba738c9aea5d22a5d90

SHA256
cba8215e980656fd9ce86529eba206dd4373693c65c2942417ce754792353f65

SHA512
e99db94945af9312c064da52b17988a02fe7082736e984edb8952561441901a71b6bef363a7383825b6930604b47db641e6bce17c17a9e8617d3bdc8423531cc

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

Filesize
498B

MD5
90be2701c8112bebc6bd58a7de19846e

SHA1
a95be407036982392e2e684fb9ff6602ecad6f1e

SHA256
644fbcdc20086e16d57f31c5bad98be68d02b1c061938d2f5f91cbe88c871fbf

SHA512
d618b473b68b48d746c912ac5fc06c73b047bd35a44a6efc7a859fe1162d68015cf69da41a5db504dcbc4928e360c095b32a3b7792fcc6a38072e1ebd12e7cbe

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

Filesize
9KB

MD5
5433eab10c6b5c6d55b7cbd302426a39

SHA1
c5b1604b3350dab290d081eecd5389a895c58de5

SHA256
23dbf7014e99e93af5f2760f18ee1370274f06a453145c8d539b66d798dad131

SHA512
207b40d6bec65ab147f963a5f42263ae5bf39857987b439a4fa1647bf9b40e99cdc43ff68b7e2463aa9a948284126ac3c9c7af8350c91134b36d8b1a9c61fd34

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

Filesize
9KB

MD5
7050d5ae8acfbe560fa11073fef8185d

SHA1
5bc38e77ff06785fe0aec5a345c4ccd15752560e

SHA256
cb87767c4a384c24e4a0f88455f59101b1ae7b4fb8de8a5adb4136c5f7ee545b

SHA512
a7a295ac8921bb3dde58d4bcde9372ed59def61d4b7699057274960fa8c1d1a1daff834a93f7a0698e9e5c16db43af05e9fd2d6d7c9232f7d26ffcff5fc5900b

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

Filesize
1KB

MD5
af10016b359b44e97cf31c1d6e80674d

SHA1
bd40174c3774d6ed188dc5676a24b3e1447bb5e4

SHA256
3ecbb63ccbb8cad7596541bea15af9946ea0ad99de2e96807758b243c33d27b0

SHA512
16353f059f299e318aaee70ff78d15e82e5807a5d88ce0d7a1479770097b712d1d7883f8ef1d9744888de50d77afb16920479c99c6db752c570cab89df577537

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\74d7f43c1561fc1e.customDestinations-ms

Filesize
1KB

MD5
1ffee3967abdbbe3964bd1a6494e290d

SHA1
361e72a9bf87a0e63cc1d07a17c06c1c144ad564

SHA256
443b4aed60d7709cb6102ccf577e739ef1f0595ee22f525a5f9b8eff1129de6f

SHA512
1dda885ea06a1daabeb7274e62fbd306db7723dfff545ddc76eb011fc7fb59e703e925009282456d90cc020cb3ad23ebe4accce8e40ec40466011d594cae8bf3

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\74d7f43c1561fc1e.customDestinations-ms

Filesize
3KB

MD5
69efc5fae65479fd4cf5e6cebbe30bd0

SHA1
48ce4f9c6bb748c4a79891758074c3fa17491d36

SHA256
4d4d8f0d52548973c4f811b7e370d21c2b3262613586c07be5f8c13db6232ff7

SHA512
0794040fcb5c89e6299761a0842d4df4600f0b5b579280f8ba9bf8aee4488de0660db1b20c278a7f46ed430367206110321f051245b519d7157218fb867c578e

Download Submit
memory/4032-33-0x00000000097F0000-0x0000000009800000-memory.dmp

Filesize
64KB

Download
memory/4032-32-0x00000000097F0000-0x0000000009800000-memory.dmp

Filesize
64KB

Download
memory/4032-31-0x00000000097F0000-0x0000000009800000-memory.dmp

Filesize
64KB

Download
memory/4032-38-0x00000000097F0000-0x0000000009800000-memory.dmp

Filesize
64KB

Download
memory/4032-37-0x00000000097F0000-0x0000000009800000-memory.dmp

Filesize
64KB

Download
memory/4032-34-0x00000000097F0000-0x0000000009800000-memory.dmp

Filesize
64KB

Download
memory/4032-35-0x00000000097F0000-0x0000000009800000-memory.dmp

Filesize
64KB

Download
memory/4032-30-0x00000000097F0000-0x0000000009800000-memory.dmp

Filesize
64KB

Download