a736269f5f3a9f2e11dd776e352e1801bc28bb699e47876784b8ef761e0062db

Resubmissions

04-08-2024 15:43

240804-s59bzaydnl 10

Analysis

max time kernel
97s
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
04-08-2024 15:43

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General

Target

builder.exe
Size

469KB
MD5

c2bc344f6dde0573ea9acdfb6698bf4c
SHA1

d6ae7dc2462c8c35c4a074b0a62f07cfef873c77
SHA256

a736269f5f3a9f2e11dd776e352e1801bc28bb699e47876784b8ef761e0062db
SHA512

d60cf86c0267cd4e88d21768665bbb43f3048dace1e0013b2361c5bfabf2656ff6215dfb75b6932e09545473305b4f707c069721cdde317b1df1709cd9fc61c0
SSDEEP

12288:CzVXpdg/1MB94JD7RfaVT1hG98P67PNV3giFH6J1VjR3L6dpbQrQyEpInmwuRUfB:CzxjgdRpBq1hG98P67PNV3giFH6J1Vjn

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

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1180	3420	WerFault.exe	90

System Location Discovery: System Language Discovery 1 TTPs 3 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	builder.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wmplayer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	unregmp2.exe

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
1824	WScript.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeShutdownPrivilege	2300	unregmp2.exe
Token: SeCreatePagefilePrivilege	2300	unregmp2.exe
Token: SeShutdownPrivilege	3420	wmplayer.exe
Token: SeCreatePagefilePrivilege	3420	wmplayer.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
3420	wmplayer.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 3420 wrote to memory of 2244	3420	wmplayer.exe	91
PID 3420 wrote to memory of 2244	3420	wmplayer.exe	91
PID 3420 wrote to memory of 2244	3420	wmplayer.exe	91
PID 2244 wrote to memory of 2300	2244	unregmp2.exe	92
PID 2244 wrote to memory of 2300	2244	unregmp2.exe	92

C:\Users\Admin\AppData\Local\Temp\builder.exe
"C:\Users\Admin\AppData\Local\Temp\builder.exe"
1⤵
- System Location Discovery: System Language Discovery
PID:1240

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\Desktop\PingDisconnect.vbs"
1⤵
- System Network Configuration Discovery: Internet Connection Discovery
PID:1824

C:\Program Files (x86)\Windows Media Player\wmplayer.exe
"C:\Program Files (x86)\Windows Media Player\wmplayer.exe" /Play -Embedding
1⤵
- Enumerates connected drives
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:3420
- C:\Windows\SysWOW64\unregmp2.exe
  "C:\Windows\System32\unregmp2.exe" /AsyncFirstLogon
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2244
- - C:\Windows\system32\unregmp2.exe
    "C:\Windows\SysNative\unregmp2.exe" /AsyncFirstLogon /REENTRANT
    3⤵
    - Enumerates connected drives
    - Suspicious use of AdjustPrivilegeToken
    PID:2300
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3420 -s 3004
  2⤵
  - Program crash
  PID:1180

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalServiceAndNoImpersonation -p -s upnphost
1⤵
- Drops file in Windows directory
PID:2760

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 376 -p 3420 -ip 3420
1⤵
PID:1784

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

System Network Configuration Discovery

T1016

Internet Connection Discovery

T1016.001

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
554d9fb3323d96f925c735560bfa8d4f

SHA1
f4c17747678c3de59355f8831f9ef6b21465f349

SHA256
c36572ed24978498b672648b74efb4c2136058ac3a2be3496d693874cb3071c1

SHA512
97bd35ac0c5a625a5d2aee0cbaa15f5cf8ded8f8da4597e6fdd9960b29fec917caa21f64880fc99d2004f0460d9142dcebfb1df1f9b236ff704a148aa882a162

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
34b65f0cd5b6c18572e2c6c0828cd075

SHA1
43dd7b68369c2461f1ddc781946d97f2e94cf9c2

SHA256
1c311e23174c572ac32a4153b78d9f9191514144e7339768eb253d1fd02d4367

SHA512
373242e9c4c28dd0f50bf4fc24dc151ac799eb6b1c6271abd9b8285b108846b7b9b7c73c82ea8c258893394eeebee60c549397f051e1dd88d6b7cee864856d57

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

Filesize
3KB

MD5
6524f37434ff18372476ecf2a45af4f2

SHA1
088bf05df9d79fe844ffaf1ef3c1e1504c6f5996

SHA256
e150bd46dfc03774fd1915e24b00da651544ec79c22c506217e86b00c91757b1

SHA512
e4c3ad9568f342ab8a272601c9790a8447a47fda3d13dd744897b04e036d11392ff71394336d6bded130cf5a645aca7bf4bf87170e8e12b694e573802383bb7d

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

Filesize
1KB

MD5
acb9a5ba3f3d7494b55cf5e91c529517

SHA1
861eaa71c33423da3504ec739dbd43d68e170bab

SHA256
6a1ae69c7edbe0eefec17727731b7df7d1b2c9774cf0ae020e0d0b84efce51cc

SHA512
20f9219ea98a4705a8bb26755bb7d2aefcf995c60f91fe47fde885c4009f89a876b7d1f9a1385797f4c83bae55ff3beacd812bdbd26ae1e834ec464284342524

Download Submit
memory/3420-41-0x0000000006C70000-0x0000000006C80000-memory.dmp

Filesize
64KB

Download
memory/3420-40-0x0000000006C70000-0x0000000006C80000-memory.dmp

Filesize
64KB

Download
memory/3420-39-0x0000000006C70000-0x0000000006C80000-memory.dmp

Filesize
64KB

Download
memory/3420-38-0x0000000006C70000-0x0000000006C80000-memory.dmp

Filesize
64KB

Download
memory/3420-43-0x0000000006C70000-0x0000000006C80000-memory.dmp

Filesize
64KB

Download
memory/3420-44-0x0000000006C70000-0x0000000006C80000-memory.dmp

Filesize
64KB

Download
memory/3420-42-0x0000000006C70000-0x0000000006C80000-memory.dmp

Filesize
64KB

Download
memory/3420-36-0x0000000006C70000-0x0000000006C80000-memory.dmp

Filesize
64KB

Download

Resubmissions

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads