b7dd3bce3ebfbc2d5e3a9f00d47f27cb6a5895c4618c878e314e573a7c216df1

Analysis

max time kernel
107s
max time network
128s
platform
windows10-ltsc 2021_x64
resource
win10ltsc2021-20241211-en
resource tags

arch:x64arch:x86image:win10ltsc2021-20241211-enlocale:en-usos:windows10-ltsc 2021-x64system
submitted
04-01-2025 01:04

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General

Target

The-MALWARE-Repo-master/Email-Worm/Klez.e.exe
Size

86KB
MD5

f2db87b351770e5995e9fcaad47d9591
SHA1

4c75bd93f458096fbc27fa852e16ce25a602f267
SHA256

3113fa9a3cf00ed423a2c686a2ffb19586f6a047747de65a93436a7dca8fcfa7
SHA512

608e74274b555a239534a9d43514e07cb8aad9b13baf4cc383e8c21ea4e9ebd36162dc0b4bf30a0975c334facf23d6e63742e2bbe4ba400e80d9f191893a84fc
SSDEEP

768:zXS6Lnze1gshn5ew/QuBdL/4Ckir4SWeq3HwFdkt+Afs2DBnoLK6KcgMvtD:TSSnze1gsJ55n/4CkOwwF+bho0st

Score

7^/10

discovery

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2136	Winkbgv.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\Winkbgv.exe	Klez.e.exe
File created	C:\Windows\SysWOW64\Winkbgv.exe	Klez.e.exe
File opened for modification	C:\Windows\SysWOW64\Winkbgv.exe	Winkbgv.exe
File created	C:\Windows\SysWOW64\Winkbgv.exe	Winkbgv.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	Klez.e.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeTcbPrivilege	2440	Klez.e.exe
Token: SeTcbPrivilege	2136	Winkbgv.exe

C:\Users\Admin\AppData\Local\Temp\The-MALWARE-Repo-master\Email-Worm\Klez.e.exe
"C:\Users\Admin\AppData\Local\Temp\The-MALWARE-Repo-master\Email-Worm\Klez.e.exe"
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:2440

C:\Windows\SysWOW64\Winkbgv.exe
C:\Windows\SysWOW64\Winkbgv.exe
1⤵
- Executes dropped EXE
- Drops file in System32 directory
- Suspicious use of AdjustPrivilegeToken
PID:2136

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

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Downloads

C:\Windows\SysWOW64\Winkbgv.exe

Filesize
84KB

MD5
adc3747b703188c8df1130ca04a91479

SHA1
ffd03fe2e3ac1c309148f20fb17075950437bd12

SHA256
f92e4612fdbb44c33df24d5d75d970bbffd49b28968a58f1d8b9c3337197769b

SHA512
91a3854d79fa66706e7e748c2da07c788ab4a98f8413816ae761d2bb6d7c14d4e78a89827fbaa45f3a4a57a0dc8a7eabbef850d3e3b9347634a28efaee4585c6

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