56553c879fa4e7359698a80fcf4235a56857ae82122e976488f20f203d61076b

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
10/05/2024, 07:49

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General

Target

2024-05-10_c24eb6b5aaa454606216f5364adb7887_cryptolocker.exe
Size

43KB
MD5

c24eb6b5aaa454606216f5364adb7887
SHA1

d01f9044ef15cc96dbae6da141f4856462098920
SHA256

56553c879fa4e7359698a80fcf4235a56857ae82122e976488f20f203d61076b
SHA512

045c65c37113f9166d33824a02eb56bae5221b84ce593b91fb424e05f968b0ebc2aca5ef70701c6f205852fffcd994591e0aa79092075e6af37e96e7cbbc54f9
SSDEEP

768:bCDOw9UiaKHfjnD0S16avdrQFiLjJvtAIiee:bCDOw9aMDooc+vAln

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/4840-0-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0009000000023546-13.dat	CryptoLocker_rule2
behavioral2/memory/4840-16-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3980-26-0x0000000008000000-0x000000000800A000-memory.dmp	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-1-5-21-1181767204-2009306918-3718769404-1000\Control Panel\International\Geo\Nation	2024-05-10_c24eb6b5aaa454606216f5364adb7887_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3980	lossy.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 4840 wrote to memory of 3980	4840	2024-05-10_c24eb6b5aaa454606216f5364adb7887_cryptolocker.exe	90
PID 4840 wrote to memory of 3980	4840	2024-05-10_c24eb6b5aaa454606216f5364adb7887_cryptolocker.exe	90
PID 4840 wrote to memory of 3980	4840	2024-05-10_c24eb6b5aaa454606216f5364adb7887_cryptolocker.exe	90

C:\Users\Admin\AppData\Local\Temp\2024-05-10_c24eb6b5aaa454606216f5364adb7887_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-10_c24eb6b5aaa454606216f5364adb7887_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4840
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  PID:3980

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 --field-trial-handle=1036,i,4686244434963378549,11462511444150484980,262144 --variations-seed-version --mojo-platform-channel-handle=4148 /prefetch:8
1⤵
PID:2288

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\lossy.exe

Filesize
43KB

MD5
f0a06f3fede7335534981eddedf2c946

SHA1
3825c11f8c08eca54c334eb68b6ff00a33263f3b

SHA256
c2df499de3d27a4a0e080cfeaf68a5b27d35fd3a646efa7fa07e0da01fbf2b93

SHA512
376ce184f934334d0d71d5febfdf76d05796439857831d7264a3ee0ee6222173a9836538a0b3c881706ca9f37211ef6d8fc3890689e8896059aac8c6a3500a1d

Download Submit
memory/3980-25-0x0000000001F00000-0x0000000001F06000-memory.dmp

Filesize
24KB

Download
memory/3980-19-0x0000000002070000-0x0000000002076000-memory.dmp

Filesize
24KB

Download
memory/3980-26-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/4840-0-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/4840-1-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/4840-2-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/4840-3-0x0000000002040000-0x0000000002046000-memory.dmp

Filesize
24KB

Download
memory/4840-16-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download