3a1f7d02986ec12aebad4ef5de23e1bc1521878bccf752794dd81c64f201a374

Analysis

max time kernel
44s
max time network
49s
platform
windows7_x64
resource
win7-20220901-en
resource tags

arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
submitted
23-11-2022 14:33

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General

Target

3a1f7d02986ec12aebad4ef5de23e1bc1521878bccf752794dd81c64f201a374.exe
Size

109KB
MD5

a01c8d98557debf9579e2786ca5e72ee
SHA1

76f69849b35c1701d6f2644d65efbe30cec6b0ea
SHA256

3a1f7d02986ec12aebad4ef5de23e1bc1521878bccf752794dd81c64f201a374
SHA512

c01333b87e2678794c96a543c303d7e0bf482308436fdf18b010c4d4ce121fc2bdc376ec2774356d7c2dcbd060da7a46551671cd67cd48233fc2859bf7327e70
SSDEEP

3072:gMr/Bo2NPTcL2a6k2al4Dv61hb5nErzRF:FlNPTcFofT6P9nEP

Score

10^/10

persistence upx

Malware Config

Signatures

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1004

Modify Registry

T1112

Processes:

3a1f7d02986ec12aebad4ef5de23e1bc1521878bccf752794dd81c64f201a374.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "C:\\Users\\Admin\\AppData\\Local\\Temp\\3a1f7d02986ec12aebad4ef5de23e1bc1521878bccf752794dd81c64f201a374.exe"	3a1f7d02986ec12aebad4ef5de23e1bc1521878bccf752794dd81c64f201a374.exe

UPX packed file 1 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

Processes:

resource	yara_rule
behavioral1/memory/1492-57-0x0000000000400000-0x0000000000443000-memory.dmp	upx

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

3a1f7d02986ec12aebad4ef5de23e1bc1521878bccf752794dd81c64f201a374.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\C:\Users\Admin\AppData\Local\Temp\3a1f7d02986ec12aebad4ef5de23e1bc1521878bccf752794dd81c64f201a374.exe = "C:\\Users\\Admin\\AppData\\Local\\Temp\\3a1f7d02986ec12aebad4ef5de23e1bc1521878bccf752794dd81c64f201a374.exe"	3a1f7d02986ec12aebad4ef5de23e1bc1521878bccf752794dd81c64f201a374.exe

Kills process with taskkill 1 IoCs
evasion

Processes:

taskkill.exe

pid process

1688 taskkill.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

taskkill.exe

description pid process

Token: SeDebugPrivilege 1688 taskkill.exe

pid	process
1688	taskkill.exe

description	pid	process
Token: SeDebugPrivilege	1688	taskkill.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

3a1f7d02986ec12aebad4ef5de23e1bc1521878bccf752794dd81c64f201a374.exe

description	pid	process	target process
PID 1492 wrote to memory of 1688	1492	3a1f7d02986ec12aebad4ef5de23e1bc1521878bccf752794dd81c64f201a374.exe	taskkill.exe
PID 1492 wrote to memory of 1688	1492	3a1f7d02986ec12aebad4ef5de23e1bc1521878bccf752794dd81c64f201a374.exe	taskkill.exe
PID 1492 wrote to memory of 1688	1492	3a1f7d02986ec12aebad4ef5de23e1bc1521878bccf752794dd81c64f201a374.exe	taskkill.exe
PID 1492 wrote to memory of 1688	1492	3a1f7d02986ec12aebad4ef5de23e1bc1521878bccf752794dd81c64f201a374.exe	taskkill.exe

C:\Users\Admin\AppData\Local\Temp\3a1f7d02986ec12aebad4ef5de23e1bc1521878bccf752794dd81c64f201a374.exe
"C:\Users\Admin\AppData\Local\Temp\3a1f7d02986ec12aebad4ef5de23e1bc1521878bccf752794dd81c64f201a374.exe"
1⤵
- Modifies WinLogon for persistence
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:1492

C:\Windows\SysWOW64\taskkill.exe
taskkill /F /IM explorer.exe
2⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:1688

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Winlogon Helper DLL

T1004

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1492-54-0x0000000000400000-0x0000000000443000-memory.dmp

Filesize
268KB

Download
memory/1492-55-0x0000000000220000-0x0000000000263000-memory.dmp

Filesize
268KB

Download
memory/1492-57-0x0000000000400000-0x0000000000443000-memory.dmp

Filesize
268KB

Download
memory/1688-56-0x0000000000000000-mapping.dmp

Download