7f7821072d79a0deb26affbf11a4e73d86bfae4a3ef05f9ae6d41757b06a3617

Analysis

max time kernel
147s
max time network
158s
platform
windows11-21h2_x64
resource
win11-20240802-en
resource tags

arch:x64arch:x86image:win11-20240802-enlocale:en-usos:windows11-21h2-x64system
submitted
13-08-2024 21:06

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General

Target

MailRanger/how to mail_1.mp4
Size

102.5MB
MD5

c3fd4ba9f6aaaa629dfd41778be61eab
SHA1

d9c6c995d4db387c763aaf0dda3ea41ca8904710
SHA256

0bda1925009f26fd58dcd3376c2da5b28753c6f1f022a8388ff928825d03ebbf
SHA512

308a695d6c61deed48adbe279bebbdb59f302c152b24321744de3a2202941289ddf79b0c6f379c92c71abe043132421aa65da5b876d056efd006cb0f725b3be3
SSDEEP

3145728:nQi1aKHLGIxyq6pEn/Fqs49QkP8vi8FsBwU:nQrNq0EcV9lPz8NU

Score

6^/10

discovery

Malware Config

Signatures

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

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

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\Software\Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppModel\Deployment\Package\*\S-1-5-21-4272559161-3282441186-401869126-1000\{436E6867-147F-4772-8834-E4FDF9C0EE7B}	wmplayer.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeShutdownPrivilege	1000	wmplayer.exe
Token: SeCreatePagefilePrivilege	1000	wmplayer.exe
Token: SeShutdownPrivilege	4608	unregmp2.exe
Token: SeCreatePagefilePrivilege	4608	unregmp2.exe
Token: 33	3744	AUDIODG.EXE
Token: SeIncBasePriorityPrivilege	3744	AUDIODG.EXE
Token: SeShutdownPrivilege	1000	wmplayer.exe
Token: SeCreatePagefilePrivilege	1000	wmplayer.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
1000	wmplayer.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 1000 wrote to memory of 240	1000	wmplayer.exe	77
PID 1000 wrote to memory of 240	1000	wmplayer.exe	77
PID 1000 wrote to memory of 240	1000	wmplayer.exe	77
PID 240 wrote to memory of 4608	240	unregmp2.exe	78
PID 240 wrote to memory of 4608	240	unregmp2.exe	78

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\MailRanger\how to mail_1.mp4"
1⤵
- Enumerates connected drives
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:1000
- C:\Windows\SysWOW64\unregmp2.exe
  "C:\Windows\System32\unregmp2.exe" /AsyncFirstLogon
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:240
- - C:\Windows\system32\unregmp2.exe
    "C:\Windows\SysNative\unregmp2.exe" /AsyncFirstLogon /REENTRANT
    3⤵
    - Enumerates connected drives
    - Suspicious use of AdjustPrivilegeToken
    PID:4608

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalServiceAndNoImpersonation -p -s upnphost
1⤵
- Drops file in Windows directory
PID:4764

C:\Windows\system32\AUDIODG.EXE
C:\Windows\system32\AUDIODG.EXE 0x00000000000004DC 0x00000000000004D8
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:3744

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
896KB

MD5
bf6ac69ca9c916d15779da9f2b0ea326

SHA1
7a46965ca1224a4ecd4839ab11e2e8f4739678cd

SHA256
5e1116c11f2878f660a8491066012ad5c963ea72e6e6f6cae866708d47047530

SHA512
c8d8bc551d5812861b395b7cef39640f268e2a3289ed711e678f371214fa49fadc7b8e1dc78b62017397f3e1e037b8f26d54dbfb1ba422b7a7492907c32fb35a

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

Filesize
1024KB

MD5
64bc168d0fe7a339455ecc33d0d61778

SHA1
ee6dfda590f6a4a5a4c3c4c334d3312b114bff24

SHA256
0d1df85a34ed7702ed2a7f2c232951e8b52a663cd2a46f73f91a24b7d4707542

SHA512
692d8655b806e475ffd51a9327faf209123006e011545337cdf5d78379c86899b072b60feb13bab600a3acfc0559fecd7fc0740114e0807d2e9049a6533ce2d3

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\Temp\wmsetup.log

Filesize
1KB

MD5
aa5cd3da3b1438a399f84a6961c8448b

SHA1
3d50fc30d41e28c6ad77bf82685113f5046d6530

SHA256
0b38af3151b519ac95fbac723d136363ddf004ec88b39259785c0287a7f8dab6

SHA512
5c79b065f2cf98daea622a2621b56add7903c7077161dd3982a779ef6ca34417e922a01da63df073f1cea8efe894b97a0bef71eaaf8b0b35b4243412cf086a2f

Download Submit
memory/1000-31-0x0000000005030000-0x0000000005040000-memory.dmp

Filesize
64KB

Download
memory/1000-33-0x0000000005030000-0x0000000005040000-memory.dmp

Filesize
64KB

Download
memory/1000-30-0x0000000005030000-0x0000000005040000-memory.dmp

Filesize
64KB

Download
memory/1000-34-0x0000000009690000-0x00000000096A0000-memory.dmp

Filesize
64KB

Download
memory/1000-38-0x0000000005030000-0x0000000005040000-memory.dmp

Filesize
64KB

Download
memory/1000-37-0x0000000005030000-0x0000000005040000-memory.dmp

Filesize
64KB

Download
memory/1000-39-0x0000000009720000-0x0000000009730000-memory.dmp

Filesize
64KB

Download
memory/1000-36-0x0000000009720000-0x0000000009730000-memory.dmp

Filesize
64KB

Download
memory/1000-35-0x0000000009720000-0x0000000009730000-memory.dmp

Filesize
64KB

Download
memory/1000-32-0x0000000005030000-0x0000000005040000-memory.dmp

Filesize
64KB

Download