vobfus | a8f27cc5719cc09cf612523a60ee1e4d1423a266ab24b3d87f8059d8e1c6f69d

General

Target

JaffaCakes118_465cc7122ed67d887761ffa86ddc8723.exe
Size

224KB
MD5

465cc7122ed67d887761ffa86ddc8723
SHA1

753e943e7946cb5b5cebda215dbfefea0ba2f4c7
SHA256

a8f27cc5719cc09cf612523a60ee1e4d1423a266ab24b3d87f8059d8e1c6f69d
SHA512

ae82f6ed7e86700c512534c46d7a55e4a3be9e3bb6b1dcb9a04e265778c48b81fce361d0ab64a24af18d418ce4e008c71cf408fb900efdce41a987d354c14435
SSDEEP

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

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_465cc7122ed67d887761ffa86ddc8723.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	JaffaCakes118_465cc7122ed67d887761ffa86ddc8723.exe
Key created	\REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer\run	JaffaCakes118_465cc7122ed67d887761ffa86ddc8723.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	JaffaCakes118_465cc7122ed67d887761ffa86ddc8723.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_465cc7122ed67d887761ffa86ddc8723.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000\Software\Microsoft\Windows\CurrentVersion\Run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	JaffaCakes118_465cc7122ed67d887761ffa86ddc8723.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1996-0-0x0000000000400000-0x0000000000437000-memory.dmp	upx
behavioral1/files/0x0007000000012117-7.dat	upx
behavioral1/memory/1996-17-0x0000000000400000-0x0000000000437000-memory.dmp	upx
behavioral1/memory/1996-18-0x0000000000400000-0x0000000000437000-memory.dmp	upx
behavioral1/memory/1996-232-0x0000000000400000-0x0000000000437000-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_465cc7122ed67d887761ffa86ddc8723.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
1996	JaffaCakes118_465cc7122ed67d887761ffa86ddc8723.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
1996	JaffaCakes118_465cc7122ed67d887761ffa86ddc8723.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1996	JaffaCakes118_465cc7122ed67d887761ffa86ddc8723.exe
1996	JaffaCakes118_465cc7122ed67d887761ffa86ddc8723.exe

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_465cc7122ed67d887761ffa86ddc8723.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_465cc7122ed67d887761ffa86ddc8723.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:1996

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
224KB

MD5
0b3dd0136cafb3f0f711cc504a178e82

SHA1
c14849998477e53f26b6f45a51be2215b8642cb9

SHA256
fe333f5a0726998ef6fceb7f8e4dba3d6e8443ab0ca6f5137f5ae8f90bbdbca1

SHA512
5300fafac2267d549bcc0dff38b5bc7ff81dd88c59b8ec0d5928a496290e1aa763519c19748ac1d3413cd944a9a5f7fbad93ea68e585abf207f6f9c034ea6e9b

Download Submit
memory/1996-0-0x0000000000400000-0x0000000000437000-memory.dmp

Filesize
220KB

Download
memory/1996-17-0x0000000000400000-0x0000000000437000-memory.dmp

Filesize
220KB

Download
memory/1996-18-0x0000000000400000-0x0000000000437000-memory.dmp

Filesize
220KB

Download
memory/1996-232-0x0000000000400000-0x0000000000437000-memory.dmp

Filesize
220KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads