66ff59563927b0b36681f00bdcf71a2da52500c6d0f26786b778b844f384f71b

Analysis

max time kernel
147s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240319-en
resource tags

arch:x64arch:x86image:win10v2004-20240319-enlocale:en-usos:windows10-2004-x64system
submitted
04-04-2024 21:34

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General

Target

66ff59563927b0b36681f00bdcf71a2da52500c6d0f26786b778b844f384f71b.exe
Size

146KB
MD5

49ecb48e3cc3edd3f3c919e0705e5e0d
SHA1

4916b33fe4dbd180f02c2e95c31cf4ea279f628c
SHA256

66ff59563927b0b36681f00bdcf71a2da52500c6d0f26786b778b844f384f71b
SHA512

f0d2c46fc91631195191a86327321da14ebf6baf364bd77cc9b9aaf6ec1c97adada6e306d77e9cbf1a46a1854a69a76c0e27889a7cca98a238722e8a6d7370c6
SSDEEP

1536:V6QFElP6n+gMQMOtEvwDpjQGYQbxGYQbxGYQbPlooHPPFk:V6a+pOtEvwDpjt22Q

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000400000001db72-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000400000001db72-12.dat	CryptoLocker_set1

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-1-5-21-817259280-2658881748-983986378-1000\Control Panel\International\Geo\Nation	66ff59563927b0b36681f00bdcf71a2da52500c6d0f26786b778b844f384f71b.exe

Executes dropped EXE 1 IoCs

pid	Process
3460	asih.exe

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

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1544 wrote to memory of 3460	1544	66ff59563927b0b36681f00bdcf71a2da52500c6d0f26786b778b844f384f71b.exe	98
PID 1544 wrote to memory of 3460	1544	66ff59563927b0b36681f00bdcf71a2da52500c6d0f26786b778b844f384f71b.exe	98
PID 1544 wrote to memory of 3460	1544	66ff59563927b0b36681f00bdcf71a2da52500c6d0f26786b778b844f384f71b.exe	98

C:\Users\Admin\AppData\Local\Temp\66ff59563927b0b36681f00bdcf71a2da52500c6d0f26786b778b844f384f71b.exe
"C:\Users\Admin\AppData\Local\Temp\66ff59563927b0b36681f00bdcf71a2da52500c6d0f26786b778b844f384f71b.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1544
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3460

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4140 --field-trial-handle=2228,i,8155065313278028490,17854605419281052753,262144 --variations-seed-version /prefetch:8
1⤵
PID:3612

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

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:\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
147KB

MD5
15a7bf77d5b82213572136aea43e8855

SHA1
5ebfab64763fee40b11b8a80122977e4b51ea7a3

SHA256
bc2ff47e8c1501eeb18f421090f960866a2285c2423a645032f88b2b6f58f2d8

SHA512
91c0f47f9fe67850efabd0c28a75651ebf661a48911836a8dc118aa76a458fb71e4c8650d432bf564350272e90d44d555a2c063183a56e3531189ee31dd93da5

Download Submit
memory/1544-0-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/1544-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/1544-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/3460-17-0x0000000002090000-0x0000000002096000-memory.dmp

Filesize
24KB

Download
memory/3460-19-0x0000000002060000-0x0000000002066000-memory.dmp

Filesize
24KB

Download