6f9ea9815f8107676f7591724c92b94bc95197f238011e459b9c6b750751d7fb

Analysis

max time kernel
147s
max time network
158s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
19-03-2024 12:46

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General

Target

2024-03-19_f655238965ba90417f43aa1b7fdbcb15_cryptolocker.exe
Size

124KB
MD5

f655238965ba90417f43aa1b7fdbcb15
SHA1

07d17a0ba8dc1659403903ed918706e962b87121
SHA256

6f9ea9815f8107676f7591724c92b94bc95197f238011e459b9c6b750751d7fb
SHA512

e4d220447c0dc1e88796031f0b7aedd0ace5fa2044ae7b348e5ed1e98cae07f9448e54885384813659493d065910c56c2c0caece71b1eb8e9296505dabc94d3e
SSDEEP

1536:u6QFElP6n+gWMOtEvwDpjJGYQbN/PKwMgdTM:u6a++OtEvwDpj6zy

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023266-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023266-12.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-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	2024-03-19_f655238965ba90417f43aa1b7fdbcb15_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3196	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 4076 wrote to memory of 3196	4076	2024-03-19_f655238965ba90417f43aa1b7fdbcb15_cryptolocker.exe	99
PID 4076 wrote to memory of 3196	4076	2024-03-19_f655238965ba90417f43aa1b7fdbcb15_cryptolocker.exe	99
PID 4076 wrote to memory of 3196	4076	2024-03-19_f655238965ba90417f43aa1b7fdbcb15_cryptolocker.exe	99

C:\Users\Admin\AppData\Local\Temp\2024-03-19_f655238965ba90417f43aa1b7fdbcb15_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-19_f655238965ba90417f43aa1b7fdbcb15_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4076
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3196

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=3932 --field-trial-handle=3088,i,14310325015283915034,7660943942870463106,262144 --variations-seed-version /prefetch:8
1⤵
PID:440

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
124KB

MD5
6c5983d4ea905e6c131775452cd7f8b3

SHA1
1ef8932b2a542300473f6c977dfd8f1081be0a65

SHA256
bf6845da96813de34346c99da30b08e4eef56f519e1b9a3e85434468f9e39d69

SHA512
238acbf36a0abb189712c2d3a6bee1e3db4d0d5cfcc50f3ad3725ce7258d3065f15a108744aeb2ef4753e4c5080c6b00a3e21978f84cf6fa76fa8f8c99ca0aed

Download Submit
memory/3196-17-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/3196-18-0x00000000005D0000-0x00000000005D6000-memory.dmp

Filesize
24KB

Download
memory/4076-0-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/4076-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/4076-2-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download