b6f1f185ff11bd583fadc15d6534cbc1e186b3ca9bc6be5e360f9a44de1a7f56

Analysis

max time kernel
150s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
27/04/2024, 05:06

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General

Target

2024-04-27_aedcd09792f0247e82e0cc9fbde4f62e_cryptolocker.exe
Size

55KB
MD5

aedcd09792f0247e82e0cc9fbde4f62e
SHA1

b5322f84f92b8cbefbd6268c8c1881de6b56a4ce
SHA256

b6f1f185ff11bd583fadc15d6534cbc1e186b3ca9bc6be5e360f9a44de1a7f56
SHA512

dd2b5b127618eb2ec3d875ca8f1323cdf01dfcede410644bbe8aac635b38301f34ec3a2fd46c20453de36c318d0742ff596814b7cb1dea57a072ab8684296366
SSDEEP

768:bP9g/WItCSsAfFaeOcfXVr3BPOz5CFBmNuFgUjl+D:bP9g/xtCS3Dxx0JD

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 2 IoCs

resource	yara_rule
behavioral2/memory/4156-0-0x0000000000400000-0x000000000040E000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0008000000023264-13.dat	CryptoLocker_rule2

UPX dump on OEP (original entry point) 2 IoCs

resource	yara_rule
behavioral2/memory/4156-0-0x0000000000400000-0x000000000040E000-memory.dmp	UPX
behavioral2/files/0x0008000000023264-13.dat	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	2024-04-27_aedcd09792f0247e82e0cc9fbde4f62e_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4724	gewos.exe

UPX packed file 2 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4156-0-0x0000000000400000-0x000000000040E000-memory.dmp	upx
behavioral2/files/0x0008000000023264-13.dat	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 4156 wrote to memory of 4724	4156	2024-04-27_aedcd09792f0247e82e0cc9fbde4f62e_cryptolocker.exe	89
PID 4156 wrote to memory of 4724	4156	2024-04-27_aedcd09792f0247e82e0cc9fbde4f62e_cryptolocker.exe	89
PID 4156 wrote to memory of 4724	4156	2024-04-27_aedcd09792f0247e82e0cc9fbde4f62e_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-04-27_aedcd09792f0247e82e0cc9fbde4f62e_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-27_aedcd09792f0247e82e0cc9fbde4f62e_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4156
- C:\Users\Admin\AppData\Local\Temp\gewos.exe
  "C:\Users\Admin\AppData\Local\Temp\gewos.exe"
  2⤵
  - Executes dropped EXE
  PID:4724

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=1040 --field-trial-handle=2264,i,15001568551143786084,90255922961447677,262144 --variations-seed-version /prefetch:8
1⤵
PID:2824

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\gewos.exe

Filesize
56KB

MD5
21347d8372f5d1d664310136b080fe80

SHA1
fdaa020846fae61cbd397cab4a5eb8fa9e3fedb1

SHA256
016c1dee5c1a1e3d06ef0151e7367bdf620890372103ff15c4fe96ba25f8c57c

SHA512
86315454e3293ad593e3c82c3f2e9ba4b75d8fb47fd23aa08da0c08920ecb31a26c6bd454e44ea99d7dfbc29973d56dfcebed57467c281a7166ce663382945cd

Download Submit
memory/4156-0-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/4156-1-0x0000000000740000-0x0000000000746000-memory.dmp

Filesize
24KB

Download
memory/4156-2-0x0000000000740000-0x0000000000746000-memory.dmp

Filesize
24KB

Download
memory/4156-3-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4724-24-0x0000000002110000-0x0000000002116000-memory.dmp

Filesize
24KB

Download