49e431c9897d14f46a5ea3c0be6440ab2cdaa7fca5ab57c0d828e9da6a587c8d

Analysis

max time kernel
53s
max time network
157s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
26/04/2024, 07:41

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General

Target

2024-04-26_c04afc07dd009cce1ea788d7dc2098d1_cryptolocker.exe
Size

40KB
MD5

c04afc07dd009cce1ea788d7dc2098d1
SHA1

6083c5a6657f28dbaed79392cbc5cdde6efb763d
SHA256

49e431c9897d14f46a5ea3c0be6440ab2cdaa7fca5ab57c0d828e9da6a587c8d
SHA512

cc462bbbb7f3c56a0ed6db4e9d893355ae448b28001c14e333f93c3a6bdfecc56924f9314bb435f85b4081cb2deed3cd9809f43757a67c04557524fed8c79bce
SSDEEP

384:ba74uGLLQRcsdeQ72ngEr4K7YmE8j6CQYnrz1ZhdaXFXSCVQTLfjDpXqxKH9:ba74zYcgT/EkdCQgpwXFXSqQXfj0xKd

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/3404-0-0x0000000008000000-0x000000000800F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0008000000023255-13.dat	CryptoLocker_rule2
behavioral2/memory/2084-18-0x0000000008000000-0x000000000800F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3404-16-0x0000000008000000-0x000000000800F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2084-27-0x0000000008000000-0x000000000800F000-memory.dmp	CryptoLocker_rule2

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral2/memory/3404-0-0x0000000008000000-0x000000000800F000-memory.dmp	UPX
behavioral2/files/0x0008000000023255-13.dat	UPX
behavioral2/memory/2084-18-0x0000000008000000-0x000000000800F000-memory.dmp	UPX
behavioral2/memory/3404-16-0x0000000008000000-0x000000000800F000-memory.dmp	UPX
behavioral2/memory/2084-27-0x0000000008000000-0x000000000800F000-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	2024-04-26_c04afc07dd009cce1ea788d7dc2098d1_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2084	hasfj.exe

UPX packed file 5 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/3404-0-0x0000000008000000-0x000000000800F000-memory.dmp	upx
behavioral2/files/0x0008000000023255-13.dat	upx
behavioral2/memory/2084-18-0x0000000008000000-0x000000000800F000-memory.dmp	upx
behavioral2/memory/3404-16-0x0000000008000000-0x000000000800F000-memory.dmp	upx
behavioral2/memory/2084-27-0x0000000008000000-0x000000000800F000-memory.dmp	upx

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 3404 wrote to memory of 2084	3404	2024-04-26_c04afc07dd009cce1ea788d7dc2098d1_cryptolocker.exe	91
PID 3404 wrote to memory of 2084	3404	2024-04-26_c04afc07dd009cce1ea788d7dc2098d1_cryptolocker.exe	91
PID 3404 wrote to memory of 2084	3404	2024-04-26_c04afc07dd009cce1ea788d7dc2098d1_cryptolocker.exe	91

C:\Users\Admin\AppData\Local\Temp\2024-04-26_c04afc07dd009cce1ea788d7dc2098d1_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-26_c04afc07dd009cce1ea788d7dc2098d1_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3404
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:2084

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=1404 --field-trial-handle=2256,i,6670388345726423024,18382795228658886258,262144 --variations-seed-version /prefetch:8
1⤵
PID:1864

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
40KB

MD5
6d4ad32cd6d6602fd579613595b1d1b6

SHA1
342bcb681ed43ed69827cdc0e0625a849a2a4917

SHA256
60bd6df3cf2d8a1c28e0b629d2913e7afc5312a584e120899b2bac7d59f2638a

SHA512
a477cb3d7be69fc44c697657f495574da5f61f107871778356102444386c9e512eabbd2574afede1cbfc9b6283a6aec609e53f7e5dff3da71ac8e12e76a9164b

Download Submit
memory/2084-18-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download
memory/2084-20-0x0000000002ED0000-0x0000000002ED6000-memory.dmp

Filesize
24KB

Download
memory/2084-22-0x0000000001FA0000-0x0000000001FA6000-memory.dmp

Filesize
24KB

Download
memory/2084-27-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download
memory/3404-0-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download
memory/3404-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/3404-2-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/3404-3-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download
memory/3404-16-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download