vobfus | 148e632294b6fa101d2d5eb25c9b613de1d57c40cda72ebc48379b093185a056

General

Target

JaffaCakes118_cd2426264f52299afac99215c1c644f4.exe
Size

9.9MB
MD5

cd2426264f52299afac99215c1c644f4
SHA1

56ca3484a9d4bc444781ed3f60a376b59d0de902
SHA256

148e632294b6fa101d2d5eb25c9b613de1d57c40cda72ebc48379b093185a056
SHA512

5b2a79d464f918de033ab0e59ed29c4080eab95d39d579072e8fbdacbdd3598ec6470f7406eee5104040ed28d4e6cf25eabe0053dc34dc3dca7573e957b93fa2
SSDEEP

98304:Vbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbi2:7

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
Vobfus family
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	JaffaCakes118_cd2426264f52299afac99215c1c644f4.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	JaffaCakes118_cd2426264f52299afac99215c1c644f4.exe
Key created	\REGISTRY\USER\S-1-5-21-3063565911-2056067323-3330884624-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer\run	JaffaCakes118_cd2426264f52299afac99215c1c644f4.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3063565911-2056067323-3330884624-1000\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	JaffaCakes118_cd2426264f52299afac99215c1c644f4.exe

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"	JaffaCakes118_cd2426264f52299afac99215c1c644f4.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3063565911-2056067323-3330884624-1000\Software\Microsoft\Windows\CurrentVersion\Run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	JaffaCakes118_cd2426264f52299afac99215c1c644f4.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2672-0-0x0000000000400000-0x0000000000437000-memory.dmp	upx
behavioral1/files/0x0008000000012117-7.dat	upx
behavioral1/memory/2672-10-0x0000000000400000-0x0000000000437000-memory.dmp	upx
behavioral1/memory/2672-74-0x0000000000400000-0x0000000000437000-memory.dmp	upx
behavioral1/memory/2672-288-0x0000000000400000-0x0000000000437000-memory.dmp	upx

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	JaffaCakes118_cd2426264f52299afac99215c1c644f4.exe

Script User-Agent 2 IoCs

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

description	flow	ioc
HTTP User-Agent header	3	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)
HTTP User-Agent header	4	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2672	JaffaCakes118_cd2426264f52299afac99215c1c644f4.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
2672	JaffaCakes118_cd2426264f52299afac99215c1c644f4.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2672	JaffaCakes118_cd2426264f52299afac99215c1c644f4.exe
2672	JaffaCakes118_cd2426264f52299afac99215c1c644f4.exe

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_cd2426264f52299afac99215c1c644f4.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_cd2426264f52299afac99215c1c644f4.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:2672

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

2

T1547

Registry Run Keys / Startup Folder

2

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

2

T1547

Registry Run Keys / Startup Folder

2

T1547.001

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
9.9MB

MD5
a77f8171de2bb2f0fced08acd542f1b2

SHA1
4410e1b484c6a94fd16148a91e129d769aaa8f6c

SHA256
e11b1dbb6e1cbc39cc70ee8d84c786bd87f96ba7c94e576eae98b85fcd692e74

SHA512
552ba339125d1cedf7bcab88fbc4f015c869ab3afb028bc4236ec63c6b513caa8facefe70509a3a242e3d14a9ec78f620e8c01beb9aeeba2d65bfd627553d01a

Download Submit
memory/2672-0-0x0000000000400000-0x0000000000437000-memory.dmp

Filesize
220KB

Download
memory/2672-10-0x0000000000400000-0x0000000000437000-memory.dmp

Filesize
220KB

Download
memory/2672-74-0x0000000000400000-0x0000000000437000-memory.dmp

Filesize
220KB

Download
memory/2672-288-0x0000000000400000-0x0000000000437000-memory.dmp

Filesize
220KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads