vobfus | 6e5c461245eb646c64b09569776643c34cd64ad121f387ce193de97280a8d3c0

General

Target

7b55e778c83e02e55449867102dd7389192b2ce6bdceb5c5a5a00d420a67591c.exe
Size

224KB
MD5

bd8b5e0c4bf0e9b3c05cbc3f3f3dcdbc
SHA1

44fb87e3e931dc55922866e9825054e730154fe9
SHA256

7b55e778c83e02e55449867102dd7389192b2ce6bdceb5c5a5a00d420a67591c
SHA512

e46f23dfac5193434caf065c5b31772b682caa2ad0983a8caad6ad13f742f8991d7181b9e143f4c9a7973dbc2f7a266528ca550b585be6c3fe8ac158903a04d0
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

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	7b55e778c83e02e55449867102dd7389192b2ce6bdceb5c5a5a00d420a67591c.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	7b55e778c83e02e55449867102dd7389192b2ce6bdceb5c5a5a00d420a67591c.exe
Key created	\REGISTRY\USER\S-1-5-21-2958949473-3205530200-1453100116-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer\run	7b55e778c83e02e55449867102dd7389192b2ce6bdceb5c5a5a00d420a67591c.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2958949473-3205530200-1453100116-1000\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	7b55e778c83e02e55449867102dd7389192b2ce6bdceb5c5a5a00d420a67591c.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2636-0-0x0000000000400000-0x0000000000437000-memory.dmp	upx
behavioral1/files/0x0004000000011ba2-7.dat	upx
behavioral1/memory/2636-24-0x0000000000400000-0x0000000000437000-memory.dmp	upx
behavioral1/memory/2636-238-0x0000000000400000-0x0000000000437000-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"	7b55e778c83e02e55449867102dd7389192b2ce6bdceb5c5a5a00d420a67591c.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2958949473-3205530200-1453100116-1000\Software\Microsoft\Windows\CurrentVersion\Run\VLXHCMT5KJ = "C:\\Users\\Admin\\AppData\\Roaming\\AG58FPQON.exe"	7b55e778c83e02e55449867102dd7389192b2ce6bdceb5c5a5a00d420a67591c.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	7b55e778c83e02e55449867102dd7389192b2ce6bdceb5c5a5a00d420a67591c.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
2636	7b55e778c83e02e55449867102dd7389192b2ce6bdceb5c5a5a00d420a67591c.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
2636	7b55e778c83e02e55449867102dd7389192b2ce6bdceb5c5a5a00d420a67591c.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2636	7b55e778c83e02e55449867102dd7389192b2ce6bdceb5c5a5a00d420a67591c.exe
2636	7b55e778c83e02e55449867102dd7389192b2ce6bdceb5c5a5a00d420a67591c.exe

C:\Users\Admin\AppData\Local\Temp\7b55e778c83e02e55449867102dd7389192b2ce6bdceb5c5a5a00d420a67591c.exe
"C:\Users\Admin\AppData\Local\Temp\7b55e778c83e02e55449867102dd7389192b2ce6bdceb5c5a5a00d420a67591c.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:2636

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
a0b7ca7c70b55d057092f5668cc650ba

SHA1
e35e14f13c13ceff82eb2a0b5a276b23b34e36e9

SHA256
711e2450b69b44198a6a811e58b1fb3f37ffb37d4b66eea5fee9527428562e26

SHA512
e06fb8bc7c832955408a8be419bd1adf4577d882410b98e3d6f5f07eaf62108eff3104c475082cd86a1544a8bea8b3d20170eb59745ec247869b70efa79f9376

Download Submit
memory/2636-0-0x0000000000400000-0x0000000000437000-memory.dmp

Filesize
220KB

Download
memory/2636-24-0x0000000000400000-0x0000000000437000-memory.dmp

Filesize
220KB

Download
memory/2636-238-0x0000000000400000-0x0000000000437000-memory.dmp

Filesize
220KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads