ef1ac9b2347702667e6a2a280bf2bcd55462882444a7c6981be74ac34df971f0

General

Target
UEPrereqSetup_x64.exe
Size 48.3MB
Sample260730-p8c66asthy
SHA256 ef1ac9b2347702667e6a2a280bf2bcd55462882444a7c6981be74ac34df971f0
MD5 f6f6011b663b2ffbf174d050bdbb7790
SHA1 a3324e86d96e5781dbfea5ce30600d7e6f41cc0c
SHA512 8f85738ed22ad4b1ac9bdf22d51a283ff44ddbfb5156f815d866e09dfc2392a8ed9851b973d7d660fd3ee1f721b32fe341bac3463aaf6ae40f7829472a559fd2
SSDEEP 1572864:eK+vvj4Atyu1D654FTg3+tQ2I9X5VDSyPtb6HtcA2:9Uvsu5654NnHAX5VTPutcA2
TLSH
T1ABB73373A68C873ECBA21837958AF9141F2E7129311484F7E79CCC691A3615323FAF56
MD5 SHA1 SHA512 SSDEEP TLSH

Score

7^/10

Malware Config

Signatures

Loads dropped DLL 1 IoCs

pid	Process
1860	UEPrereqSetup_x64.exe

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

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	UEPrereqSetup_x64.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	UEPrereqSetup_x64.exe

Checks SCSI registry key(s) 3 TTPs 5 IoCs

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

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\Device Parameters	vssvc.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\Device Parameters\Partmgr	vssvc.exe
Set value (data)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\Device Parameters\Partmgr\PartitionTableCache = 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	vssvc.exe
Set value (data)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\Device Parameters\Partmgr\SnapshotDataCache = 534e41505041525401000000700000008ec7416a0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	vssvc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\Device Parameters	vssvc.exe

Suspicious use of AdjustPrivilegeToken 11 IoCs

description	pid	Process
Token: SeBackupPrivilege	1144	vssvc.exe
Token: SeRestorePrivilege	1144	vssvc.exe
Token: SeAuditPrivilege	1144	vssvc.exe
Token: SeBackupPrivilege	5740	srtasks.exe
Token: SeRestorePrivilege	5740	srtasks.exe
Token: SeSecurityPrivilege	5740	srtasks.exe
Token: SeTakeOwnershipPrivilege	5740	srtasks.exe
Token: SeBackupPrivilege	5740	srtasks.exe
Token: SeRestorePrivilege	5740	srtasks.exe
Token: SeSecurityPrivilege	5740	srtasks.exe
Token: SeTakeOwnershipPrivilege	5740	srtasks.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
1860	UEPrereqSetup_x64.exe

Suspicious use of WriteProcessMemory 1 IoCs

description	pid	Process	procid_target
PID 956 wrote to memory of 1860	956	UEPrereqSetup_x64.exe	87

Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
ransomware

C:\Users\Admin\AppData\Local\Temp\UEPrereqSetup_x64.exe
C:\Users\Admin\AppData\Local\Temp\UEPrereqSetup_x64.exe /passive /norestart
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:956
- C:\Users\Admin\AppData\Local\Temp\UEPrereqSetup_x64.exe
  "C:\Users\Admin\AppData\Local\Temp\UEPrereqSetup_x64.exe" /passive /norestart -burn.unelevated BurnPipe.{2B5116F5-95D5-4183-AA1B-30C6D3BE0E66} {B91E6962-999F-4724-8AF4-B5B00E8F1255} 956
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of FindShellTrayWindow
  PID:1860

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Checks SCSI registry key(s)
- Suspicious use of AdjustPrivilegeToken
PID:1144

C:\Windows\system32\srtasks.exe
C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:5740

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

Banner.bmp

Path C:\Users\Admin\AppData\Local\Temp\{2c4a7cc2-986f-41a8-a4d3-86c8177f87cf}\.ba1\Banner.bmp
Size 123KB
SHA256 b76bbf9f7b8da4ca886f3b97d7db00ab1d38a9bb3b9567f4e1c3e30203098add
MD5 87300b4c1b1d79f75e3c406043d73acb
SHA1 de7ed5119f1caf8d11d30810c28031b37d1485aa
SHA512 1d482404dcbcb3326e0efa4cdf46253be374f83d5c0f1051c15d4b1625b4e1e61adf017d037f8f4cc643e205be657cf5cc4edeb566f7eb44a89729ee050280da
SSDEEP 192:VSNHyTXie12ZyYyblHBphfuMrHn5gu8JOeehv6q+nqmHGajWZoDeJX/2+Pw:0ZEXie7YMDnfuiHqu8ionqapWZoDeHo
TLSH
T173C35D24C9B6ABD0C52909A37CD77754105B9F9C5ADC6CE98D98BCE833BC100589B8BF
MD5 SHA1 SHA512 SSDEEP TLSH

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LogoSide.png

Path C:\Users\Admin\AppData\Local\Temp\{2c4a7cc2-986f-41a8-a4d3-86c8177f87cf}\.ba1\LogoSide.png
Size 6KB
SHA256 988c657d1cc77aceb4804c5217bf756eaa2b4defcb4d03f47aea83ccda3d3672
MD5 702684ff196740ebaedb34beca30346f
SHA1 1f3af4bdac42b973b05dc121fc00c804aa3c28ec
SHA512 ff4eec96f733ed32280123f5a6bff4a488eab4586a9740416125ceef1b4e1ce85dddb4524589111d1c6c57fb9d561a3586b637f8b17e8ff8dd2bf736b484b676
SSDEEP 96:tShDBamM07aN2V97B5VAqGerxjV4IVfS8AeJn0TfIb8R21QPzKT0i2OKqslna1E4:tS9S25VuehV458d8R2KPzj9qOa2xsuK
TLSH
T13BD11A4064A88E3901800617F981E43B4D76D96BBFE7377EC7CA2B62FF278390906C55
MD5 SHA1 SHA512 SSDEEP TLSH

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wixstdba.dll

Path C:\Users\Admin\AppData\Local\Temp\{2c4a7cc2-986f-41a8-a4d3-86c8177f87cf}\.ba1\wixstdba.dll
Size 135KB
SHA256 97f1901e7c928b9231e503cd3a1315f0d8449356b9f25e7eb4c2cebeee72012a
MD5 36b53c5299a3b39e5c9cdbbd28a09506
SHA1 9f4c767ef7ea887a88a698bcd66e4ba691e1c17a
SHA512 af4c7cea8bebe0f125b59eed11fa0053178dd546784f68ad7a642eb128ed0d05dd6ccfe685b912381b61becf9c336dcbbc8c4ce56884a511f3f0a69826d8de83
SSDEEP 3072:TSr1RqAidK8hzwgkmo9VB/bgR7+iX8r2cf43:K1RqAiE+0mo60Ko2cu
TLSH
T1F7D35C1176E05072F7FB063869785365AB3FFE29E9B0DA8A6784194E28711C0DF71B23
MD5 SHA1 SHA512 SSDEEP TLSH

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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Downloads