ac2e25ef4606cd1c90bb3b264d3f48658501393252d0be1b9b08c4bd7a109213

Analysis

max time kernel
150s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
18/03/2024, 10:42

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General

Target

2024-03-18_91add22e69f10e0d410fcb425884bd6a_cryptolocker.exe
Size

387KB
MD5

91add22e69f10e0d410fcb425884bd6a
SHA1

e06d8a7b69e9e60d0c68d8e67f7e3f72c56f94cd
SHA256

ac2e25ef4606cd1c90bb3b264d3f48658501393252d0be1b9b08c4bd7a109213
SHA512

55069016e19d1e634ee1d66489cdbdf47d5682f2d36d9d5648f075c4f8fdf5d5ed9f1e8eb5a1978705dd7f7bbc6a863275cd56adb80fd3729e4de6ac2c8b218b
SSDEEP

6144:nnOsaQgAOjvrZFODJjBz3j1jTqQy6v2GGnugOtihzX5:nnOflT/ZFIjBz3xjTxynGUOUhX5

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023356-12.dat	CryptoLocker_rule2

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-1-5-21-1904519900-954640453-4250331663-1000\Control Panel\International\Geo\Nation	2024-03-18_91add22e69f10e0d410fcb425884bd6a_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4752	hasfj.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 1860 wrote to memory of 4752	1860	2024-03-18_91add22e69f10e0d410fcb425884bd6a_cryptolocker.exe	97
PID 1860 wrote to memory of 4752	1860	2024-03-18_91add22e69f10e0d410fcb425884bd6a_cryptolocker.exe	97
PID 1860 wrote to memory of 4752	1860	2024-03-18_91add22e69f10e0d410fcb425884bd6a_cryptolocker.exe	97

C:\Users\Admin\AppData\Local\Temp\2024-03-18_91add22e69f10e0d410fcb425884bd6a_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-18_91add22e69f10e0d410fcb425884bd6a_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1860
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:4752

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=3792 --field-trial-handle=2268,i,8796662530135712346,11409037572378858775,262144 --variations-seed-version /prefetch:8
1⤵
PID:1016

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\hasfj.exe

Filesize
387KB

MD5
269ea417778373ef1cf9cff4eaf5364c

SHA1
dfb4b5a29e647a334ea51efc45d9a7aa7e31579a

SHA256
c9ded0a0e3cce894f58dc9e5aebcf3227f93f34d1a77baad1839b5d50d8e8a3c

SHA512
396383cdb4abb7d3d92c428bf9a64b2c72b622abde44d308d47522a18d7bf64fc31b68e7c4eb048627f5831455a57f6ec024709a449639310b011afbb8accb69

Download Submit
memory/1860-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/1860-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/1860-2-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download
memory/4752-17-0x0000000002230000-0x0000000002236000-memory.dmp

Filesize
24KB

Download
memory/4752-23-0x0000000002200000-0x0000000002206000-memory.dmp

Filesize
24KB

Download