99b7f76b11336a2316fb019b03693e553080262c3cef7f5337ca6fba7cd5a338

Analysis

max time kernel
1354s
max time network
1143s
platform
windows10-2004_x64
resource
win10v2004-20240910-en
resource tags

arch:x64arch:x86image:win10v2004-20240910-enlocale:en-usos:windows10-2004-x64system
submitted
28-09-2024 20:30

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General

Target

Remcos v5.1.3 Light.exe
Size

38.4MB
MD5

1a787dacd4ac908241f677303af69d6f
SHA1

fa57edb0b2e21e8a55602cb96809efcfcfee65c1
SHA256

4098c759068a197e9b5236af09fc8344da2d0d8d8a3fd4c17824160b1afea5a0
SHA512

a6d0a770e9c425fa9f28a99e81a4f630c362692b9c4c623963871b2de992f5e10c035e1d23e1e8dbcd729777fa630801bf4998f7d83d245d353470353d71b650
SSDEEP

786432:WIXQNSBAVi1Bs2DuYr3jxkQNk58issVWhJDS3IWgrAfUPE+szJFjU:WIXQgAVi1eQ3jnm8ihADnrAuE3HA

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

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
1504	Remcos v5.1.3 Light.exe
1504	Remcos v5.1.3 Light.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
2000	3848	WerFault.exe	113

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	Remcos v5.1.3 Light.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wmplayer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	unregmp2.exe

Checks processor information in registry 2 TTPs 3 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	EXCEL.EXE

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 2 IoCs

pid	Process
1696	EXCEL.EXE
220	vlc.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1504	Remcos v5.1.3 Light.exe
1504	Remcos v5.1.3 Light.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
220	vlc.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeShutdownPrivilege	4240	unregmp2.exe
Token: SeCreatePagefilePrivilege	4240	unregmp2.exe
Token: SeShutdownPrivilege	3848	wmplayer.exe
Token: SeCreatePagefilePrivilege	3848	wmplayer.exe

Suspicious use of FindShellTrayWindow 16 IoCs

pid	Process
3848	wmplayer.exe
220	vlc.exe
220	vlc.exe
220	vlc.exe
220	vlc.exe
220	vlc.exe
220	vlc.exe
220	vlc.exe
220	vlc.exe
220	vlc.exe
220	vlc.exe
220	vlc.exe
220	vlc.exe
220	vlc.exe
220	vlc.exe
220	vlc.exe

Suspicious use of SendNotifyMessage 14 IoCs

pid	Process
220	vlc.exe
220	vlc.exe
220	vlc.exe
220	vlc.exe
220	vlc.exe
220	vlc.exe
220	vlc.exe
220	vlc.exe
220	vlc.exe
220	vlc.exe
220	vlc.exe
220	vlc.exe
220	vlc.exe
220	vlc.exe

Suspicious use of SetWindowsHookEx 14 IoCs

pid	Process
1504	Remcos v5.1.3 Light.exe
1696	EXCEL.EXE
1696	EXCEL.EXE
1696	EXCEL.EXE
1696	EXCEL.EXE
1696	EXCEL.EXE
1696	EXCEL.EXE
1696	EXCEL.EXE
1696	EXCEL.EXE
1696	EXCEL.EXE
1696	EXCEL.EXE
1696	EXCEL.EXE
1696	EXCEL.EXE
220	vlc.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 3848 wrote to memory of 3456	3848	wmplayer.exe	114
PID 3848 wrote to memory of 3456	3848	wmplayer.exe	114
PID 3848 wrote to memory of 3456	3848	wmplayer.exe	114
PID 3456 wrote to memory of 4240	3456	unregmp2.exe	115
PID 3456 wrote to memory of 4240	3456	unregmp2.exe	115

C:\Users\Admin\AppData\Local\Temp\Remcos v5.1.3 Light.exe
"C:\Users\Admin\AppData\Local\Temp\Remcos v5.1.3 Light.exe"
1⤵
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
PID:1504

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
1⤵
PID:2532

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:3848
- C:\Windows\SysWOW64\unregmp2.exe
  "C:\Windows\System32\unregmp2.exe" /AsyncFirstLogon
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3456
- - C:\Windows\system32\unregmp2.exe
    "C:\Windows\SysNative\unregmp2.exe" /AsyncFirstLogon /REENTRANT
    3⤵
    - Enumerates connected drives
    - Suspicious use of AdjustPrivilegeToken
    PID:4240
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3848 -s 2880
  2⤵
  - Program crash
  PID:2000

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalServiceAndNoImpersonation -p -s upnphost
1⤵
- Drops file in Windows directory
PID:3388

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 3848 -ip 3848
1⤵
PID:1248

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\Desktop\CheckpointSearch.xlsx"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
PID:1696

C:\Program Files\VideoLAN\VLC\vlc.exe
"C:\Program Files\VideoLAN\VLC\vlc.exe" --started-from-file "C:\Users\Admin\Desktop\DisableAdd.mp4v"
1⤵
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of SetWindowsHookEx
PID:220

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
512KB

MD5
b329979a534a47e4381448265b867bb0

SHA1
8623145d1f06430662a2304e50cff646b7551d2e

SHA256
5f785ceee7336194384e68adb44509ee2787857786c15b58f054024543b423f3

SHA512
b2359a8740387142a603e3b84e6da9771f67eda3346b60a7cba0a52882ea5f8eca0abf8006143f0975ba3617b26897c3fe22822852a210883c213a20c8fb8346

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

Filesize
1024KB

MD5
49c8a0bd4e95b7f0d0a0cbd7b24fb59f

SHA1
9cd7b808fbf0ee6e1024efba2ff322f453b997e7

SHA256
2f48a8fc3202a92a645d28ce39eeee6fdbc055ade7354345a6f5f086dc4925ce

SHA512
6288d72fa2eca4da0818c3ddc706406e28f468eda7707d67a35ce544417d3df3f75e0ea1a71f5db2b2e013613a4c9ef584eccedd168dd930c2f7162320432e6d

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
f8403ed9075e0883edb7958948eaa4b9

SHA1
29988b20df01d4304fd6d52929e1d458b69e11ac

SHA256
edc1582fbd70eb0dfe120f23751cff4b1b24d3509eb44723a975896633d1ad16

SHA512
365eda5e6eccc55349ce02e84adaf58b694668452ff020b5ff22336dc7bf603649e1d353c7716c9f2f58e2c304fd20bd70560c4fc07f50fcfc95aec3662bc353

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Office\Recent\index.dat

Filesize
385B

MD5
f3baa24b9005b64655aabfc7847acb6b

SHA1
8f38ff6290a99ce782dabee3589f7dadc55610ee

SHA256
82133c648058213d2f8c3520bf92daefaed4f47b114fb8b0040d484ffa13a6de

SHA512
7323dc399dcb3b729fd315fdcd089604d9b88ec283b14d4b9357972b53f9abdc475498d78c9b9fd84762354fd451f99494d5d308f2ce7675447ce9c7b6495155

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

Filesize
1KB

MD5
0b744564abbf513296c66c0a04d1e4a4

SHA1
97b400ff5a5a0f15cc97c2a0455cb4988a723637

SHA256
4eab2916eeb89c88097d3b69983543cd358f1391ba1cf267a9e0c89ccfe3922f

SHA512
04767aa1ada78c0de87a2923d9e7e6397a99d2413149767a557f7d26d4dfc420852a7d72b49bc436e15eb84d28fe3d547b58e9a2617beca25f0bfa81affe35cd

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

Filesize
3KB

MD5
3cfab9e1b83bf8a27d4233ce7ee082f7

SHA1
54dd2d24ba0b0cc3d4ab4e1a208125c727b08383

SHA256
340cd6517496e0535278e5862b1e0e4fa2fbb572b9e7c4da0714ee4d6bfe9136

SHA512
46173d6d1d0319351bf782034e3ea2f52185b00648c9f501de06b3f03ef4f0cd7844c67b866854aedde098cc08d052b6d6575c49faa2302e78b1b0875645d071

Download Submit
memory/220-129-0x00007FF667970000-0x00007FF667A68000-memory.dmp

Filesize
992KB

Download
memory/220-130-0x00007FF954820000-0x00007FF954854000-memory.dmp

Filesize
208KB

Download
memory/220-131-0x00007FF943F30000-0x00007FF9441E6000-memory.dmp

Filesize
2.7MB

Download
memory/220-132-0x00007FF942480000-0x00007FF943530000-memory.dmp

Filesize
16.7MB

Download
memory/1504-9-0x0000000000400000-0x000000000658D000-memory.dmp

Filesize
97.6MB

Download
memory/1504-2-0x0000000006760000-0x0000000006761000-memory.dmp

Filesize
4KB

Download
memory/1504-14-0x0000000000400000-0x000000000658D000-memory.dmp

Filesize
97.6MB

Download
memory/1504-13-0x0000000000400000-0x000000000658D000-memory.dmp

Filesize
97.6MB

Download
memory/1504-12-0x0000000000400000-0x000000000658D000-memory.dmp

Filesize
97.6MB

Download
memory/1504-0-0x0000000000401000-0x000000000083A000-memory.dmp

Filesize
4.2MB

Download
memory/1504-1-0x0000000006740000-0x0000000006741000-memory.dmp

Filesize
4KB

Download
memory/1504-6-0x0000000008470000-0x0000000008471000-memory.dmp

Filesize
4KB

Download
memory/1504-4-0x0000000006780000-0x0000000006781000-memory.dmp

Filesize
4KB

Download
memory/1504-3-0x0000000006770000-0x0000000006771000-memory.dmp

Filesize
4KB

Download
memory/1504-5-0x00000000067A0000-0x00000000067A1000-memory.dmp

Filesize
4KB

Download
memory/1504-8-0x0000000008490000-0x0000000008491000-memory.dmp

Filesize
4KB

Download
memory/1504-7-0x0000000008480000-0x0000000008481000-memory.dmp

Filesize
4KB

Download
memory/1504-15-0x0000000000400000-0x000000000658D000-memory.dmp

Filesize
97.6MB

Download
memory/1696-69-0x00007FF922BF0000-0x00007FF922C00000-memory.dmp

Filesize
64KB

Download
memory/1696-71-0x00007FF920430000-0x00007FF920440000-memory.dmp

Filesize
64KB

Download
memory/1696-70-0x00007FF920430000-0x00007FF920440000-memory.dmp

Filesize
64KB

Download
memory/1696-108-0x00007FF922BF0000-0x00007FF922C00000-memory.dmp

Filesize
64KB

Download
memory/1696-109-0x00007FF922BF0000-0x00007FF922C00000-memory.dmp

Filesize
64KB

Download
memory/1696-111-0x00007FF922BF0000-0x00007FF922C00000-memory.dmp

Filesize
64KB

Download
memory/1696-110-0x00007FF922BF0000-0x00007FF922C00000-memory.dmp

Filesize
64KB

Download
memory/1696-68-0x00007FF922BF0000-0x00007FF922C00000-memory.dmp

Filesize
64KB

Download
memory/1696-66-0x00007FF922BF0000-0x00007FF922C00000-memory.dmp

Filesize
64KB

Download
memory/1696-67-0x00007FF922BF0000-0x00007FF922C00000-memory.dmp

Filesize
64KB

Download
memory/1696-65-0x00007FF922BF0000-0x00007FF922C00000-memory.dmp

Filesize
64KB

Download