a3b23415e7aed3a8f289f0b94d7f056f0e12beb87a81573db9e639fe3d26a6cd

Analysis

max time kernel
112s
max time network
119s
platform
windows10-2004_x64
resource
win10v2004-20220901-en
resource tags

arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
submitted
01-10-2022 19:41

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General

Target

a3b23415e7aed3a8f289f0b94d7f056f0e12beb87a81573db9e639fe3d26a6cd.exe
Size

569KB
MD5

67ce6ec81564c49ceea44b1ccde4bdd0
SHA1

363dbaef9610e2a442acee0eeb4cf87ae148535d
SHA256

a3b23415e7aed3a8f289f0b94d7f056f0e12beb87a81573db9e639fe3d26a6cd
SHA512

6c4f302e31958e5ecebb88f2e14ef2f7a5e382cf5c0eb158a8b731311c445820304a8b7dd52fb59d9b5aed62832286ec0cfa794dac80b355dbaff0989d56f044
SSDEEP

12288:Gzy6rRxEOE+B7PgUr72MXtKed65Ot6ld3/DCeEt6/gMKlHw0QK7Oy:d6rTZE+ZPx/2TeOOtcdGt6pECK77

Score

8^/10

persistence upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
4852	svchost.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x0007000000022e04-133.dat	upx
behavioral2/files/0x0007000000022e04-134.dat	upx
behavioral2/memory/4852-135-0x0000000000400000-0x000000000056F000-memory.dmp	upx
behavioral2/memory/4852-136-0x0000000000400000-0x000000000056F000-memory.dmp	upx

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-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation	a3b23415e7aed3a8f289f0b94d7f056f0e12beb87a81573db9e639fe3d26a6cd.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\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\svchost.exe = "C:\\Users\\Admin\\svchost.exe"	svchost.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 2228 wrote to memory of 4852	2228	a3b23415e7aed3a8f289f0b94d7f056f0e12beb87a81573db9e639fe3d26a6cd.exe	83
PID 2228 wrote to memory of 4852	2228	a3b23415e7aed3a8f289f0b94d7f056f0e12beb87a81573db9e639fe3d26a6cd.exe	83
PID 2228 wrote to memory of 4852	2228	a3b23415e7aed3a8f289f0b94d7f056f0e12beb87a81573db9e639fe3d26a6cd.exe	83

C:\Users\Admin\AppData\Local\Temp\a3b23415e7aed3a8f289f0b94d7f056f0e12beb87a81573db9e639fe3d26a6cd.exe
"C:\Users\Admin\AppData\Local\Temp\a3b23415e7aed3a8f289f0b94d7f056f0e12beb87a81573db9e639fe3d26a6cd.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2228
- C:\Users\Admin\AppData\Local\Temp\svchost.exe
  "C:\Users\Admin\AppData\Local\Temp\svchost.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  PID:4852

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

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Downloads

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

Filesize
476KB

MD5
ebc61557a029545c554f6eaa215199c7

SHA1
99a2450399283a3bbc9341ee20bfee7e2e4e89c7

SHA256
e10096624d319af38f3d9b211b90da0d4f7fcd075b57b8a30087bc1919598198

SHA512
a17618f1c2d0499b07d790b35e01848182c5d6338f13ec7b8f637dfd69594b2bbde83c430b8d1e4ec5a3bc3c2e06394c11b85cedd0e7e5f32dc0456214c97521

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

Filesize
476KB

MD5
ebc61557a029545c554f6eaa215199c7

SHA1
99a2450399283a3bbc9341ee20bfee7e2e4e89c7

SHA256
e10096624d319af38f3d9b211b90da0d4f7fcd075b57b8a30087bc1919598198

SHA512
a17618f1c2d0499b07d790b35e01848182c5d6338f13ec7b8f637dfd69594b2bbde83c430b8d1e4ec5a3bc3c2e06394c11b85cedd0e7e5f32dc0456214c97521

Download Submit
memory/4852-132-0x0000000000000000-mapping.dmp

Download
memory/4852-135-0x0000000000400000-0x000000000056F000-memory.dmp

Filesize
1.4MB

Download
memory/4852-136-0x0000000000400000-0x000000000056F000-memory.dmp

Filesize
1.4MB

Download