vobfus | 0682b8d1f7752da267754492177335e09c7ec49584d25c3635609a1cd11338de

Analysis

max time kernel
150s
max time network
141s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
25-08-2024 10:04

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General

Target

c07fdbd297a01ca95d369d30ad6710ed_JaffaCakes118.exe
Size

220KB
MD5

c07fdbd297a01ca95d369d30ad6710ed
SHA1

f6aad085efd46c8e0bd12f2e6360026528f7e224
SHA256

0682b8d1f7752da267754492177335e09c7ec49584d25c3635609a1cd11338de
SHA512

6b02d6a38b5f421ca235e385a6b6a74c05728b1d52dffc36699f9616624a59cab8abb45d2188e9b888b70e0d338adf545b3cf4ca74254000ec20e34d39a0dd48
SSDEEP

3072:vHjk+0oLnWFnzBHv/xWFsg8WatFBGFVWPE5ac0pG/1z+QVMbg1jm0+Jj:Po/BHng5HaVG4G/1z+QVMbg1jv+1

Score

10^/10

vobfus discovery persistence upx worm

Malware Config

Signatures

Vobfus
A widespread worm which spreads via network drives and removable media.
worm vobfus

Adds policy Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run	c07fdbd297a01ca95d369d30ad6710ed_JaffaCakes118.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	c07fdbd297a01ca95d369d30ad6710ed_JaffaCakes118.exe
Key created	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer\run	c07fdbd297a01ca95d369d30ad6710ed_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	c07fdbd297a01ca95d369d30ad6710ed_JaffaCakes118.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1676-0-0x0000000000400000-0x0000000000437000-memory.dmp	upx
behavioral2/files/0x000c000000023450-7.dat	upx
behavioral2/memory/1676-24-0x0000000000400000-0x0000000000437000-memory.dmp	upx
behavioral2/memory/1676-238-0x0000000000400000-0x0000000000437000-memory.dmp	upx

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	c07fdbd297a01ca95d369d30ad6710ed_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	c07fdbd297a01ca95d369d30ad6710ed_JaffaCakes118.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	c07fdbd297a01ca95d369d30ad6710ed_JaffaCakes118.exe

Script User-Agent 2 IoCs

Uses user-agent string associated with script host/environment.

description	flow	ioc
HTTP User-Agent header	62	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)
HTTP User-Agent header	21	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1676	c07fdbd297a01ca95d369d30ad6710ed_JaffaCakes118.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
1676	c07fdbd297a01ca95d369d30ad6710ed_JaffaCakes118.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1676	c07fdbd297a01ca95d369d30ad6710ed_JaffaCakes118.exe
1676	c07fdbd297a01ca95d369d30ad6710ed_JaffaCakes118.exe

C:\Users\Admin\AppData\Local\Temp\c07fdbd297a01ca95d369d30ad6710ed_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\c07fdbd297a01ca95d369d30ad6710ed_JaffaCakes118.exe"
1⤵
- Adds policy Run key to start application
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious behavior: RenamesItself
- Suspicious use of SetWindowsHookEx
PID:1676

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

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\AG58FPQON.exe

Filesize
220KB

MD5
970b32d9bf9d2390bf3aac2b81647b25

SHA1
c320086b85f414de345afe11438877be7ce3583a

SHA256
c67853009d15e723bd6b4f504e0199923e16a2de72d6354e7a21b143410287d6

SHA512
259816e94d788aa879f159de9702552110af4eeb85cc11c5362694419d5e8a97089f943b46aec6d5e65db3263d4618cce2c38127666fbfdc9f3a367d23130742

Download Submit
memory/1676-0-0x0000000000400000-0x0000000000437000-memory.dmp

Filesize
220KB

Download
memory/1676-24-0x0000000000400000-0x0000000000437000-memory.dmp

Filesize
220KB

Download
memory/1676-238-0x0000000000400000-0x0000000000437000-memory.dmp

Filesize
220KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads