dbcc4f8d005f376ea8e3d5962412853f187c795981210df35fe4d26305c4876e

Analysis

max time kernel
147s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
05/04/2024, 22:23

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General

Target

2024-04-05_22ea934eb9538d0d5bf00da59967c9b1_cryptolocker.exe
Size

60KB
MD5

22ea934eb9538d0d5bf00da59967c9b1
SHA1

3d60adb9195674b64453c5b371a330e06b8f3b51
SHA256

dbcc4f8d005f376ea8e3d5962412853f187c795981210df35fe4d26305c4876e
SHA512

428e9d406388dfadeaac17bf2a61aaf884baab9ec87548d9bc4231a01335a2c4fd8e0834fb477dfd2dc222984678a3d8ce372e23531c873cc73e321c58c8c8fa
SSDEEP

1536:qmbhXDmjr5MOtEvwDpj5cDtKkQZQRKb614h:BbdDmjr+OtEvwDpjM2

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/2348-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0008000000023246-13.dat	CryptoLocker_rule2
behavioral2/memory/2348-24-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1596-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 2 IoCs

resource	yara_rule
behavioral2/memory/2348-24-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/1596-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/2348-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/files/0x0008000000023246-13.dat	UPX
behavioral2/memory/2348-24-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/1596-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

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	2024-04-05_22ea934eb9538d0d5bf00da59967c9b1_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1596	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 2348 wrote to memory of 1596	2348	2024-04-05_22ea934eb9538d0d5bf00da59967c9b1_cryptolocker.exe	95
PID 2348 wrote to memory of 1596	2348	2024-04-05_22ea934eb9538d0d5bf00da59967c9b1_cryptolocker.exe	95
PID 2348 wrote to memory of 1596	2348	2024-04-05_22ea934eb9538d0d5bf00da59967c9b1_cryptolocker.exe	95

C:\Users\Admin\AppData\Local\Temp\2024-04-05_22ea934eb9538d0d5bf00da59967c9b1_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-05_22ea934eb9538d0d5bf00da59967c9b1_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2348
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1596

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=1408 --field-trial-handle=2744,i,16362475727591565961,3676688664819797550,262144 --variations-seed-version /prefetch:8
1⤵
PID:372

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
60KB

MD5
08b066423c0f95058a1ad95689d8a626

SHA1
b3de1f964c8d0de8511d8538de7c4dcc2424092d

SHA256
ab984384ff9b29dc03cf268d0b3c704a243196690ad41cbe95e42d481f9a22e0

SHA512
0a232bcfd647d4d4f716e68614869f3cb5d68db3e14da5b675f9832ed7e943ccbbacd7c8ce57eed66e989a6cf601a213c1ebdb8b2da8f0873074e430adf21551

Download Submit
memory/1596-18-0x0000000000650000-0x0000000000656000-memory.dmp

Filesize
24KB

Download
memory/1596-23-0x0000000000630000-0x0000000000636000-memory.dmp

Filesize
24KB

Download
memory/1596-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2348-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2348-1-0x0000000000830000-0x0000000000836000-memory.dmp

Filesize
24KB

Download
memory/2348-2-0x0000000000830000-0x0000000000836000-memory.dmp

Filesize
24KB

Download
memory/2348-3-0x0000000000860000-0x0000000000866000-memory.dmp

Filesize
24KB

Download
memory/2348-24-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download