539de833e89028ea28f04fba105bc100ddeb6fe1b69506176ab8d6b950f54177

Analysis

max time kernel
150s
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 21:33

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General

Target

539de833e89028ea28f04fba105bc100ddeb6fe1b69506176ab8d6b950f54177.exe
Size

39KB
MD5

9e2f5cc404638eccfafe8b0c2ca4daf6
SHA1

444cf8027f0f4afd4e4faaf206cc6324d75614d6
SHA256

539de833e89028ea28f04fba105bc100ddeb6fe1b69506176ab8d6b950f54177
SHA512

abda649d57dfb94286e1aa96aa229885627a5c19db7911afa0ca40531f6bf6850f82a92390858dc156f689a4f2f9b3cedfb54c7ebdfa26dbd842bfafcf54e786
SSDEEP

768:bIDOw9UiaCHfjnE0Sf88AvvP1oghYvm9/6DyE9x2:bIDOw9a0Dwo3P1ojvUSD798

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000800000002333a-12.dat	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-1-5-21-1904519900-954640453-4250331663-1000\Control Panel\International\Geo\Nation	539de833e89028ea28f04fba105bc100ddeb6fe1b69506176ab8d6b950f54177.exe

Executes dropped EXE 1 IoCs

pid	Process
4208	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 5068 wrote to memory of 4208	5068	539de833e89028ea28f04fba105bc100ddeb6fe1b69506176ab8d6b950f54177.exe	93
PID 5068 wrote to memory of 4208	5068	539de833e89028ea28f04fba105bc100ddeb6fe1b69506176ab8d6b950f54177.exe	93
PID 5068 wrote to memory of 4208	5068	539de833e89028ea28f04fba105bc100ddeb6fe1b69506176ab8d6b950f54177.exe	93

C:\Users\Admin\AppData\Local\Temp\539de833e89028ea28f04fba105bc100ddeb6fe1b69506176ab8d6b950f54177.exe
"C:\Users\Admin\AppData\Local\Temp\539de833e89028ea28f04fba105bc100ddeb6fe1b69506176ab8d6b950f54177.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:5068
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  PID:4208

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=1032 --field-trial-handle=2700,i,14629483171127516024,12350888228055326066,262144 --variations-seed-version /prefetch:8
1⤵
PID:4152

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
40KB

MD5
eca0c931345bb2afde7b5056fadd6871

SHA1
aa6ad4275f970b03a8271d5286bbf409e503bd68

SHA256
bd9ca1e8d2699766e4dd203b5d544e2b518397934d91acd6e74c4ab833d804b8

SHA512
0c0895f32cc2bbaa5fb302b69b63c9a4c58b4a27f87f13ed90dd0c1ed2472653d40ea4b4bd52477379b305d7910df45b06daa15998b8c9e99d4f308b567ccf25

Download Submit
memory/4208-17-0x0000000002060000-0x0000000002066000-memory.dmp

Filesize
24KB

Download
memory/4208-18-0x0000000002040000-0x0000000002046000-memory.dmp

Filesize
24KB

Download
memory/5068-0-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/5068-1-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/5068-2-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download