deedb59bcec2385234447ea66347b59f8b0aa8464f8cbb7d2eea5a28b1b25590

Analysis

max time kernel
196s
max time network
203s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
04-12-2022 14:06

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General

Target

deedb59bcec2385234447ea66347b59f8b0aa8464f8cbb7d2eea5a28b1b25590.exe
Size

48KB
MD5

f3194cd1dfe52a3b1ddae58272aaedd8
SHA1

d1ef93df2deb8983b65d3e8e72f91b4e1bcae879
SHA256

deedb59bcec2385234447ea66347b59f8b0aa8464f8cbb7d2eea5a28b1b25590
SHA512

d787655af0d3a39ff9d8f6b5077962763be5f6eed851019d45c15171f805ae6b7d1dcf09c60bf0daa4ecf2c49bafe1ae9fc3c9b83d4d435ae44925954137916d
SSDEEP

768:6buDiv3N+KjGgZCH6yku7oGeZsQT6rd/tjtP19DWsWqFUUEhJJMXLSi2uF2uh:hiPMIGIdtCo0Ftpt3yZzJJoLSs

Score

8^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
4896	juupdate.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\taoy.i	deedb59bcec2385234447ea66347b59f8b0aa8464f8cbb7d2eea5a28b1b25590.exe
File created	C:\Windows\SysWOW64\taoy.icO	deedb59bcec2385234447ea66347b59f8b0aa8464f8cbb7d2eea5a28b1b25590.exe

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

System Information Discovery
T1082

Modifies registry class 2 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.kvh	deedb59bcec2385234447ea66347b59f8b0aa8464f8cbb7d2eea5a28b1b25590.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.kvh\ = "JSEFile"	deedb59bcec2385234447ea66347b59f8b0aa8464f8cbb7d2eea5a28b1b25590.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4344 wrote to memory of 4896	4344	deedb59bcec2385234447ea66347b59f8b0aa8464f8cbb7d2eea5a28b1b25590.exe	81
PID 4344 wrote to memory of 4896	4344	deedb59bcec2385234447ea66347b59f8b0aa8464f8cbb7d2eea5a28b1b25590.exe	81
PID 4344 wrote to memory of 4896	4344	deedb59bcec2385234447ea66347b59f8b0aa8464f8cbb7d2eea5a28b1b25590.exe	81

C:\Users\Admin\AppData\Local\Temp\deedb59bcec2385234447ea66347b59f8b0aa8464f8cbb7d2eea5a28b1b25590.exe
"C:\Users\Admin\AppData\Local\Temp\deedb59bcec2385234447ea66347b59f8b0aa8464f8cbb7d2eea5a28b1b25590.exe"
1⤵
- Drops file in System32 directory
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:4344
- C:\Users\Admin\AppData\Local\Temp\juupdate.exe
  "C:\Users\Admin\AppData\Local\Temp\juupdate.exe" "C:\Users\Admin\AppData\Local\Temp\master.kvh"
  2⤵
  - Executes dropped EXE
  PID:4896

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\juupdate.exe

Filesize
144KB

MD5
ff00e0480075b095948000bdc66e81f0

SHA1
c2326cc50a739d3bc512bb65a24d42f1cde745c9

SHA256
8c767077bb410f95b1db237b31f4f6e1512c78c1f0120de3f215b501f6d1c7ea

SHA512
3a38e62dcb925411bc037335e46dfdd895c12a52ac43c47ef38db42d41d8358dfc2b1081a361367911d60ec5a3350ca734cf70ad57b21d39b23cfdec35b0aced

Download Submit
C:\Users\Admin\AppData\Local\Temp\juupdate.exe

Filesize
144KB

MD5
ff00e0480075b095948000bdc66e81f0

SHA1
c2326cc50a739d3bc512bb65a24d42f1cde745c9

SHA256
8c767077bb410f95b1db237b31f4f6e1512c78c1f0120de3f215b501f6d1c7ea

SHA512
3a38e62dcb925411bc037335e46dfdd895c12a52ac43c47ef38db42d41d8358dfc2b1081a361367911d60ec5a3350ca734cf70ad57b21d39b23cfdec35b0aced

Download Submit
C:\Users\Admin\AppData\Local\Temp\master.kvh

Filesize
9KB

MD5
e710026dda5d338a696475ccdad2eef1

SHA1
79985f4bc32adab9d1133846ac50445ff9e2c5da

SHA256
2adb4fdd59322c08222c6c73b6ae69dd22390b30d3ba50f869bf939e560c72f9

SHA512
e4f6c2acff673f6c0ca8d193000fe37cd000f9f2ebd7f480220d5c93629cbf1e2129fe73ffac47b2a6cc52132ced3650fece0937e086ca9f3ffb331b5d8e4490

Download Submit
memory/4344-132-0x0000000000400000-0x00000000007AC02D-memory.dmp

Filesize
3.7MB

Download
memory/4344-133-0x0000000000400000-0x00000000007AC02D-memory.dmp

Filesize
3.7MB

Download
memory/4344-138-0x0000000000400000-0x00000000007AC02D-memory.dmp

Filesize
3.7MB

Download