697a0ab6df4c8a79c1d46973a59c780e6c6a4a1e778143ba15837dbd58042a44

Analysis

max time kernel
143s
max time network
167s
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, 20:48

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General

Target

2024-03-19_ef3a6b13ad4005e782f4af579157ba7e_cryptolocker.exe
Size

76KB
MD5

ef3a6b13ad4005e782f4af579157ba7e
SHA1

83395816a828f44dc71c6e17ad4334d47b957af9
SHA256

697a0ab6df4c8a79c1d46973a59c780e6c6a4a1e778143ba15837dbd58042a44
SHA512

fd17770b74bab2cbd58866ffa7fe47eacc724e4af425225444b76270b6ac96f7786e748132cf63e70cbdbbc9071ddcaf797d77e1388d8985893713db0fd106d1
SSDEEP

1536:vj+jsMQMOtEvwDpj5HwYYTjipvF2hBfWa6b:vCjsIOtEvwDpj5H9YvQd2A

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0009000000023311-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0009000000023311-12.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-1-5-21-1904519900-954640453-4250331663-1000\Control Panel\International\Geo\Nation	2024-03-19_ef3a6b13ad4005e782f4af579157ba7e_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4144	misid.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 820 wrote to memory of 4144	820	2024-03-19_ef3a6b13ad4005e782f4af579157ba7e_cryptolocker.exe	98
PID 820 wrote to memory of 4144	820	2024-03-19_ef3a6b13ad4005e782f4af579157ba7e_cryptolocker.exe	98
PID 820 wrote to memory of 4144	820	2024-03-19_ef3a6b13ad4005e782f4af579157ba7e_cryptolocker.exe	98

C:\Users\Admin\AppData\Local\Temp\2024-03-19_ef3a6b13ad4005e782f4af579157ba7e_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-19_ef3a6b13ad4005e782f4af579157ba7e_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:820
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:4144

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=1416 --field-trial-handle=2240,i,16875000905773190493,11379096115878622792,262144 --variations-seed-version /prefetch:8
1⤵
PID:1484

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\misid.exe

Filesize
76KB

MD5
8542f6c696cfaee90687002da63ad41d

SHA1
d388bc358c0fafec0c2b4694466126df7c951f30

SHA256
5afba6d3db3785cb2027f2c9868b7ecb19577df81ead326001aa725a86aebf34

SHA512
59e87bd18a712ea8d4473adacf826957060b9eb5d699418feba748fde51e1280fce3a377335182172e481dd67c977ea5cf0e330c8b27e9a6bbf47e5e92207d84

Download Submit
memory/820-0-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/820-1-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/820-2-0x00000000006D0000-0x00000000006D6000-memory.dmp

Filesize
24KB

Download
memory/4144-17-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/4144-20-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download