f4eafd655ba3557ed6dcc98ede8cece0bb4ea0dce7c9ad5e32f028cd93dd0d3e

Analysis

max time kernel
132s
max time network
182s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
06/12/2022, 12:39

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General

Target

f4eafd655ba3557ed6dcc98ede8cece0bb4ea0dce7c9ad5e32f028cd93dd0d3e.exe
Size

242KB
MD5

605ebab43137394757c28df03f4bd042
SHA1

bc7d301d5ff3650bc458836b33adf02110bb3d5c
SHA256

f4eafd655ba3557ed6dcc98ede8cece0bb4ea0dce7c9ad5e32f028cd93dd0d3e
SHA512

1c1869a9f9ed636420db4355d6ab9a5d1f5769c0422d450bd8dfcecd91a2b9a5723bce2709dd7372e73bd4e21334aa7e0536333a7a83ddf6a54d1a532d079b29
SSDEEP

6144:NhPXXq+mnw3XHVct/m987uyDjm9s6Jty5KyCXv5JmrcTsR82X8poeONbDT7nkoEo:PPgm+Rm987uyDjm9s6Jty5KyCXv5Jmr7

Score

8^/10

persistence

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
4476	KeyIso.exe.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	f4eafd655ba3557ed6dcc98ede8cece0bb4ea0dce7c9ad5e32f028cd93dd0d3e.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\KeyIso.exe = "C:\\Windows\\system32\\KeyIso.exe.exe"	f4eafd655ba3557ed6dcc98ede8cece0bb4ea0dce7c9ad5e32f028cd93dd0d3e.exe

Drops file in System32 directory 3 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\KeyIso.exe.exe	f4eafd655ba3557ed6dcc98ede8cece0bb4ea0dce7c9ad5e32f028cd93dd0d3e.exe
File opened for modification	C:\Windows\SysWOW64\KeyIso.exe.exe	f4eafd655ba3557ed6dcc98ede8cece0bb4ea0dce7c9ad5e32f028cd93dd0d3e.exe
File created	C:\Windows\SysWOW64\KeyIso.exe.exe	KeyIso.exe.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1200 wrote to memory of 4476	1200	f4eafd655ba3557ed6dcc98ede8cece0bb4ea0dce7c9ad5e32f028cd93dd0d3e.exe	80
PID 1200 wrote to memory of 4476	1200	f4eafd655ba3557ed6dcc98ede8cece0bb4ea0dce7c9ad5e32f028cd93dd0d3e.exe	80
PID 1200 wrote to memory of 4476	1200	f4eafd655ba3557ed6dcc98ede8cece0bb4ea0dce7c9ad5e32f028cd93dd0d3e.exe	80

C:\Users\Admin\AppData\Local\Temp\f4eafd655ba3557ed6dcc98ede8cece0bb4ea0dce7c9ad5e32f028cd93dd0d3e.exe
"C:\Users\Admin\AppData\Local\Temp\f4eafd655ba3557ed6dcc98ede8cece0bb4ea0dce7c9ad5e32f028cd93dd0d3e.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
PID:1200
- C:\Windows\SysWOW64\KeyIso.exe.exe
  "C:\Windows\system32\KeyIso.exe.exe"
  2⤵
  - Executes dropped EXE
  - Drops file in System32 directory
  PID:4476

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\SysWOW64\KeyIso.exe.exe

Filesize
242KB

MD5
605ebab43137394757c28df03f4bd042

SHA1
bc7d301d5ff3650bc458836b33adf02110bb3d5c

SHA256
f4eafd655ba3557ed6dcc98ede8cece0bb4ea0dce7c9ad5e32f028cd93dd0d3e

SHA512
1c1869a9f9ed636420db4355d6ab9a5d1f5769c0422d450bd8dfcecd91a2b9a5723bce2709dd7372e73bd4e21334aa7e0536333a7a83ddf6a54d1a532d079b29

Download Submit
C:\Windows\SysWOW64\KeyIso.exe.exe

Filesize
242KB

MD5
605ebab43137394757c28df03f4bd042

SHA1
bc7d301d5ff3650bc458836b33adf02110bb3d5c

SHA256
f4eafd655ba3557ed6dcc98ede8cece0bb4ea0dce7c9ad5e32f028cd93dd0d3e

SHA512
1c1869a9f9ed636420db4355d6ab9a5d1f5769c0422d450bd8dfcecd91a2b9a5723bce2709dd7372e73bd4e21334aa7e0536333a7a83ddf6a54d1a532d079b29

Download Submit
memory/1200-132-0x0000000000400000-0x0000000000972DF8-memory.dmp

Filesize
5.4MB

Download
memory/1200-136-0x0000000000400000-0x0000000000972DF8-memory.dmp

Filesize
5.4MB

Download
memory/4476-137-0x0000000000400000-0x0000000000972DF8-memory.dmp

Filesize
5.4MB

Download