9574e6c0883dc6308441a8af9d6c71191349272231abf89004e5005ce228dc40

Analysis

max time kernel
21s
max time network
20s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
24-04-2024 12:49

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General

Target

vcredist2005_x64.exe
Size

3.0MB
MD5

56eaf4e1237c974f6984edc93972c123
SHA1

ee916012783024dac67fc606457377932c826f05
SHA256

0551a61c85b718e1fa015b0c3e3f4c4eea0637055536c00e7969286b4fa663e0
SHA512

f8e15363e34db5b5445c41eea4dd80b2f682642cb8f1046f30ea4fb5f4f51b0b604f7bcb3000a35a7d3ba1d1bcc07df9b25e4533170c65640b2d137c19916736
SSDEEP

49152:+r67+stI6RWGTAdyvlADUrpTmcOgohwJpEM5grO3oc1OXZViFeRyDErkLUMHzkRN:AM9l8pUr9m30L5grOQXZKAsErkbQRN

Score

6^/10

persistence

Malware Config

Signatures

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

vcredist2005_x64.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\RunOnce\wextract_cleanup0 = "rundll32.exe C:\\Windows\\system32\\advpack.dll,DelNodeRunDLL32 \"C:\\Users\\Admin\\AppData\\Local\\Temp\\IXP000.TMP\\\""	vcredist2005_x64.exe

Enumerates connected drives 3 TTPs 23 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

Processes:

msiexec.exe

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

Suspicious use of AdjustPrivilegeToken 39 IoCs

Processes:

msiexec.exemsiexec.exevssvc.exe

description	pid	process
Token: SeShutdownPrivilege	3036	msiexec.exe
Token: SeIncreaseQuotaPrivilege	3036	msiexec.exe
Token: SeRestorePrivilege	2560	msiexec.exe
Token: SeTakeOwnershipPrivilege	2560	msiexec.exe
Token: SeSecurityPrivilege	2560	msiexec.exe
Token: SeCreateTokenPrivilege	3036	msiexec.exe
Token: SeAssignPrimaryTokenPrivilege	3036	msiexec.exe
Token: SeLockMemoryPrivilege	3036	msiexec.exe
Token: SeIncreaseQuotaPrivilege	3036	msiexec.exe
Token: SeMachineAccountPrivilege	3036	msiexec.exe
Token: SeTcbPrivilege	3036	msiexec.exe
Token: SeSecurityPrivilege	3036	msiexec.exe
Token: SeTakeOwnershipPrivilege	3036	msiexec.exe
Token: SeLoadDriverPrivilege	3036	msiexec.exe
Token: SeSystemProfilePrivilege	3036	msiexec.exe
Token: SeSystemtimePrivilege	3036	msiexec.exe
Token: SeProfSingleProcessPrivilege	3036	msiexec.exe
Token: SeIncBasePriorityPrivilege	3036	msiexec.exe
Token: SeCreatePagefilePrivilege	3036	msiexec.exe
Token: SeCreatePermanentPrivilege	3036	msiexec.exe
Token: SeBackupPrivilege	3036	msiexec.exe
Token: SeRestorePrivilege	3036	msiexec.exe
Token: SeShutdownPrivilege	3036	msiexec.exe
Token: SeDebugPrivilege	3036	msiexec.exe
Token: SeAuditPrivilege	3036	msiexec.exe
Token: SeSystemEnvironmentPrivilege	3036	msiexec.exe
Token: SeChangeNotifyPrivilege	3036	msiexec.exe
Token: SeRemoteShutdownPrivilege	3036	msiexec.exe
Token: SeUndockPrivilege	3036	msiexec.exe
Token: SeSyncAgentPrivilege	3036	msiexec.exe
Token: SeEnableDelegationPrivilege	3036	msiexec.exe
Token: SeManageVolumePrivilege	3036	msiexec.exe
Token: SeImpersonatePrivilege	3036	msiexec.exe
Token: SeCreateGlobalPrivilege	3036	msiexec.exe
Token: SeBackupPrivilege	2540	vssvc.exe
Token: SeRestorePrivilege	2540	vssvc.exe
Token: SeAuditPrivilege	2540	vssvc.exe
Token: SeBackupPrivilege	2560	msiexec.exe
Token: SeRestorePrivilege	2560	msiexec.exe

Suspicious use of FindShellTrayWindow 1 IoCs

Processes:

msiexec.exe

pid process

3036 msiexec.exe

pid	process
3036	msiexec.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

vcredist2005_x64.exe

description	pid	process	target process
PID 2744 wrote to memory of 3036	2744	vcredist2005_x64.exe	msiexec.exe
PID 2744 wrote to memory of 3036	2744	vcredist2005_x64.exe	msiexec.exe
PID 2744 wrote to memory of 3036	2744	vcredist2005_x64.exe	msiexec.exe
PID 2744 wrote to memory of 3036	2744	vcredist2005_x64.exe	msiexec.exe
PID 2744 wrote to memory of 3036	2744	vcredist2005_x64.exe	msiexec.exe
PID 2744 wrote to memory of 3036	2744	vcredist2005_x64.exe	msiexec.exe
PID 2744 wrote to memory of 3036	2744	vcredist2005_x64.exe	msiexec.exe

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\vcredist2005_x64.exe
"C:\Users\Admin\AppData\Local\Temp\vcredist2005_x64.exe"
1⤵
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:2744

C:\Windows\SysWOW64\msiexec.exe
msiexec /i vcredist.msi
2⤵
- Enumerates connected drives
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
PID:3036

C:\Windows\system32\msiexec.exe
C:\Windows\system32\msiexec.exe /V
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2560

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2540

C:\Windows\system32\DrvInst.exe
DrvInst.exe "1" "200" "STORAGE\VolumeSnapshot\HarddiskVolumeSnapshot19" "" "" "61530dda3" "0000000000000000" "0000000000000060" "00000000000005AC"
1⤵
PID:1716

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

Filesize
344B

MD5
ff2db75ff80c22c12a68913a1451e1ac

SHA1
f11a54e9f53248deab085afb06a441e62a4679ca

SHA256
95c30cdd535c4f02e733e4297bef8a1926073148526300e18e1bf839b15c83dd

SHA512
91877b5af490e276f1a9861b9c601417c4fc9d11b4553a2ddd42378830a4e89ffc626f3a39477ac2986f1540bc6a4dc4d45b097f05a0a813ae94f622c081bf54

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C:\Users\Admin\AppData\Local\Temp\Cab252.tmp

Filesize
65KB

MD5
ac05d27423a85adc1622c714f2cb6184

SHA1
b0fe2b1abddb97837ea0195be70ab2ff14d43198

SHA256
c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d

SHA512
6d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d

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C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\vcredist.msi

Filesize
3.0MB

MD5
6dbdf338a0a25cdb236d43ea3ca2395e

SHA1
685b6ea61e574e628392eaac8b10aff4309f1081

SHA256
200fef5d4994523a02c4daa00060db28eb289b99d47fc6c1305183101e72bdeb

SHA512
6b5b31c55cf72ab92b17fb6074b3901a1e6afe0796ef9bc831e4dfb97450376d2889cd24b1cf3fce60eb3c1bcd1b31254b5cfa3ef6107974dfa0b35c233daf5a

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