bbd05de19aa2af1455c0494639215898a15286d9b05073b6c4817fe24b2c36fa

Resubmissions

10-10-2024 19:50

241010-yj8q7syfnn 1

10-10-2024 18:01

241010-wl6nhsyfkh 5

10-10-2024 17:55

241010-whj1caydme 4

Analysis

max time kernel
300s
max time network
301s
platform
windows11-21h2_x64
resource
win11-20241007-en
resource tags

arch:x64arch:x86image:win11-20241007-enlocale:en-usos:windows11-21h2-x64system
submitted
10-10-2024 17:55

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General

Target

42.zip
Size

41KB
MD5

1df9a18b18332f153918030b7b516615
SHA1

6c42c62696616b72bbfc88a4be4ead57aa7bc503
SHA256

bbd05de19aa2af1455c0494639215898a15286d9b05073b6c4817fe24b2c36fa
SHA512

6382ca9c307d66ab7566acf78b1afd44b18b24d766253e1dc1cb3a3c0be96ecf1f2042d6bd3332d49078ffee571cf98869c1284c1d3e5c1c7dc3e4c64f71af80
SSDEEP

768:hzyVr8GSKL6O3QOXk/0u3wqOghrFCezL1VFJdbq2QTJTw02Q:hGx8DKXE//ZhhCirFi2cwK

Score

4^/10

discovery

Malware Config

Signatures

Drops file in Windows directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\Panther\UnattendGC\setupact.log	UserOOBEBroker.exe
File opened for modification	C:\Windows\Panther\UnattendGC\setuperr.log	UserOOBEBroker.exe
File opened for modification	C:\Windows\Panther\UnattendGC\diagerr.xml	UserOOBEBroker.exe
File opened for modification	C:\Windows\Panther\UnattendGC\diagwrn.xml	UserOOBEBroker.exe

System Location Discovery: System Language Discovery 1 TTPs 1 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	FileCoAuth.exe

Modifies registry class 7 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3587106988-279496464-3440778474-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\microsoftwindows.client.cbs_cw5n1h2txyewy\Internet Settings\Cache\Cookies\CachePrefix = "Cookie:"	BackgroundTransferHost.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3587106988-279496464-3440778474-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\microsoftwindows.client.cbs_cw5n1h2txyewy\Internet Settings\Cache\History\CachePrefix = "Visited:"	BackgroundTransferHost.exe
Key created	\REGISTRY\USER\S-1-5-21-3587106988-279496464-3440778474-1000_Classes\Local Settings\MuiCache	BackgroundTransferHost.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{4336a54d-038b-4685-ab02-99bb52d3fb8b}\Instance\	7zFM.exe
Key created	\REGISTRY\USER\S-1-5-21-3587106988-279496464-3440778474-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance\	7zFM.exe
Key created	\REGISTRY\USER\S-1-5-21-3587106988-279496464-3440778474-1000_Classes\Local Settings\MuiCache	MiniSearchHost.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3587106988-279496464-3440778474-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\microsoftwindows.client.cbs_cw5n1h2txyewy\Internet Settings\Cache\Content\CachePrefix	BackgroundTransferHost.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3320	7zFM.exe

Suspicious behavior: LoadsDriver 6 IoCs

pid	Process
4	Process not Found
4	Process not Found
4	Process not Found
4	Process not Found
4	Process not Found
676	Process not Found

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeRestorePrivilege	3320	7zFM.exe
Token: 35	3320	7zFM.exe
Token: SeSecurityPrivilege	3320	7zFM.exe
Token: SeSecurityPrivilege	3320	7zFM.exe
Token: SeSecurityPrivilege	3320	7zFM.exe

Suspicious use of FindShellTrayWindow 4 IoCs

pid	Process
3320	7zFM.exe
3320	7zFM.exe
3320	7zFM.exe
3320	7zFM.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4668	MiniSearchHost.exe

C:\Program Files\7-Zip\7zFM.exe
"C:\Program Files\7-Zip\7zFM.exe" "C:\Users\Admin\AppData\Local\Temp\42.zip"
1⤵
- Modifies registry class
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
PID:3320

C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\MiniSearchHost.exe
"C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\MiniSearchHost.exe" -ServerName:MiniSearchUI.AppXj3y73at8fy1htwztzxs68sxx1v7cksp7.mca
1⤵
- Modifies registry class
- Suspicious use of SetWindowsHookEx
PID:4668

C:\Windows\system32\BackgroundTransferHost.exe
"BackgroundTransferHost.exe" -ServerName:BackgroundTransferHost.13
1⤵
- Modifies registry class
PID:1532

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalService -p -s NPSMSvc
1⤵
PID:3108

C:\Windows\System32\oobe\UserOOBEBroker.exe
C:\Windows\System32\oobe\UserOOBEBroker.exe -Embedding
1⤵
- Drops file in Windows directory
PID:4676

C:\Users\Admin\AppData\Local\Microsoft\OneDrive\18.151.0729.0013\FileCoAuth.exe
C:\Users\Admin\AppData\Local\Microsoft\OneDrive\18.151.0729.0013\FileCoAuth.exe -Embedding
1⤵
- System Location Discovery: System Language Discovery
PID:3260

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k DevicesFlow -s DevicesFlowUserSvc
1⤵
PID:4180

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
1⤵
PID:3708

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

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\Packages\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\AC\BackgroundTransferApi\7bd08d9d-6a58-4119-a019-67a482e977c7.down_data

Filesize
555KB

MD5
5683c0028832cae4ef93ca39c8ac5029

SHA1
248755e4e1db552e0b6f8651b04ca6d1b31a86fb

SHA256
855abd360d8a8d6974eba92b70cbd09ce519bc8773439993f9ab37cb6847309e

SHA512
aba434bd29be191c823b02ea9b639beb10647bbe7759bbffdaa790dfb1ec2c58d74c525ef11aacda209e4effe322d1d3a07b115446c8914b07a3bce4d8a0e2c3

Download Submit
C:\Users\Admin\AppData\Local\Packages\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\TempState\SearchHoverUnifiedTileModelCache.dat

Filesize
10KB

MD5
069c37bf9e39b121efb7a28ece933aee

SHA1
eaef2e55b66e543a14a6780c23bb83fe60f2f04d

SHA256
485db8db6b497d31d428aceea416da20d88f7bde88dbfd6d59e3e7eee0a75ae8

SHA512
f4562071143c2ebc259a20cbb45b133c863f127a5750672b7a2af47783c7cdc56dcf1064ae83f54e5fc0bb4e93826bf2ab4ef6e604f955bf594f2cbd641db796

Download Submit
C:\Users\Admin\AppData\Local\Packages\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\TempState\SearchHoverUnifiedTileModelCache.dat

Filesize
10KB

MD5
eed640164203d0d0a2a1e7919a6fdbdf

SHA1
9af74121e090cf2970beee82d22ef4ebb886c0ae

SHA256
4ca7fe712b4322fdb497733e015f4ae4496d3998772a6c37305da3cbba3eb7ae

SHA512
1bf6de193ae00189525ea9a685bbe3dc7722eceb6ccfb83c70adc766b6301b4978abf73b2f8f41b865f1521925308e4f96285dca569e9c2b2c61e79db1100e3d

Download Submit
C:\Users\Admin\AppData\Local\Temp\lib 2.zip

Filesize
34KB

MD5
0a76bd3e26768bba68aca3d210997069

SHA1
753690994a18cf58ed0fe3749d16448b763047b8

SHA256
9056b87f079861d1b0f041317d6415927d9ffb6498ce2530ff90fda69fa64e78

SHA512
14408ea7f44bc365a58d7480fff9ea3b10fa21bfbd3363c6e30b74a4d4121677e20ce1108cce12c203f0760768aee1c1aa69b130e090c409f9a516ea02d70c49

Download Submit