b4402239bf264cf894112a70483b6dfaa0bf97029db147dfd3e8fdd9a7e5bdf0

Analysis

max time kernel
177s
max time network
188s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
29-11-2022 17:13

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

b4402239bf264cf894112a70483b6dfaa0bf97029db147dfd3e8fdd9a7e5bdf0.exe
Size

196KB
MD5

45865a7b63df4f876e067301df5b14ad
SHA1

37ea93a4420028945e8b9e06a7edb2854cd30eb6
SHA256

b4402239bf264cf894112a70483b6dfaa0bf97029db147dfd3e8fdd9a7e5bdf0
SHA512

131498ffe6c25160bcff1b8c63d62731dc3165fecdeb0a82ef9cd39fe181fa9d259ade5fe919b657dca94fbabca8c6349b14321755692af116ea0a0718513077
SSDEEP

3072:1uAkoaXd323AKyXzUiKiJeIMUyJA0jNGgu0CHRf7nOa682EHqNo3m5p:1uAko1yNKiJeIMHBJGg9Cxf7XHwo36

Score

10^/10

evasion persistence

Malware Config

Signatures

Modifies visiblity of hidden/system files in Explorer 2 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1158

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	b4402239bf264cf894112a70483b6dfaa0bf97029db147dfd3e8fdd9a7e5bdf0.exe

Executes dropped EXE 1 IoCs

pid	Process
4644	jrrac.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-1-5-21-4246620582-653642754-1174164128-1000\Control Panel\International\Geo\Nation	b4402239bf264cf894112a70483b6dfaa0bf97029db147dfd3e8fdd9a7e5bdf0.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Software\Microsoft\Windows\CurrentVersion\Run\	b4402239bf264cf894112a70483b6dfaa0bf97029db147dfd3e8fdd9a7e5bdf0.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\jrrac = "C:\\Users\\Admin\\jrrac.exe /o"	b4402239bf264cf894112a70483b6dfaa0bf97029db147dfd3e8fdd9a7e5bdf0.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2244	b4402239bf264cf894112a70483b6dfaa0bf97029db147dfd3e8fdd9a7e5bdf0.exe
2244	b4402239bf264cf894112a70483b6dfaa0bf97029db147dfd3e8fdd9a7e5bdf0.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2244	b4402239bf264cf894112a70483b6dfaa0bf97029db147dfd3e8fdd9a7e5bdf0.exe
4644	jrrac.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2244 wrote to memory of 4644	2244	b4402239bf264cf894112a70483b6dfaa0bf97029db147dfd3e8fdd9a7e5bdf0.exe	84
PID 2244 wrote to memory of 4644	2244	b4402239bf264cf894112a70483b6dfaa0bf97029db147dfd3e8fdd9a7e5bdf0.exe	84
PID 2244 wrote to memory of 4644	2244	b4402239bf264cf894112a70483b6dfaa0bf97029db147dfd3e8fdd9a7e5bdf0.exe	84

C:\Users\Admin\AppData\Local\Temp\b4402239bf264cf894112a70483b6dfaa0bf97029db147dfd3e8fdd9a7e5bdf0.exe
"C:\Users\Admin\AppData\Local\Temp\b4402239bf264cf894112a70483b6dfaa0bf97029db147dfd3e8fdd9a7e5bdf0.exe"
1⤵
- Modifies visiblity of hidden/system files in Explorer
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2244
- C:\Users\Admin\jrrac.exe
  "C:\Users\Admin\jrrac.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetWindowsHookEx
  PID:4644

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Hidden Files and Directories

T1158

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Hidden Files and Directories

T1158

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\jrrac.exe

Filesize
196KB

MD5
fbe88ee8058bad2f3ddfa7dc41150382

SHA1
3db1b3eb3cdf3399c2da058ef4f1f0fd181f45e5

SHA256
1c4ec37cbfed611cd18192bacd1fdb2036b5932b4ae6d2aa1611ec911bf1c76a

SHA512
db704726249e6e83f0b0497f4632d9861aec68053d86cafef76636adfa371c2e9c39d73993c5cb9f227959cbe2339acb9dc080ba53263d6fddf2ef6d2bc655b0

Download Submit
C:\Users\Admin\jrrac.exe

Filesize
196KB

MD5
fbe88ee8058bad2f3ddfa7dc41150382

SHA1
3db1b3eb3cdf3399c2da058ef4f1f0fd181f45e5

SHA256
1c4ec37cbfed611cd18192bacd1fdb2036b5932b4ae6d2aa1611ec911bf1c76a

SHA512
db704726249e6e83f0b0497f4632d9861aec68053d86cafef76636adfa371c2e9c39d73993c5cb9f227959cbe2339acb9dc080ba53263d6fddf2ef6d2bc655b0

Download Submit