653b2dcdf3122e2bfa42e53393e4db571463a55313d983b4d3a75da404a150a5

Analysis

max time kernel
108s
max time network
169s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
09-04-2024 22:13

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General

Target

3b40a93ef10acf6a9c9f454ebf041f74.exe
Size

85KB
MD5

3b40a93ef10acf6a9c9f454ebf041f74
SHA1

e5e626ff2a83dd38db0ba266938567ac5dda98f1
SHA256

653b2dcdf3122e2bfa42e53393e4db571463a55313d983b4d3a75da404a150a5
SHA512

b7533027a50725676a42b67410c6b728e55559297353a11489f4e07bf855b089d70c52fba27c10fbd24b064296aca197f03237328a5591d576ea60e44fe0b598
SSDEEP

768:fT2NXnFk5dPsED3VK2+ZtyOjgO4r9vFAg2rqZGjU+X95u3goQUi:C1SYTjipvF2Xxru3go+

Score

7^/10

Malware Config

Signatures

Checks computer location settings 2 TTPs 2 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	3b40a93ef10acf6a9c9f454ebf041f74.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	fcbnaf.exe

Executes dropped EXE 1 IoCs

pid	Process
3408	fcbnaf.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 4212 wrote to memory of 3408	4212	3b40a93ef10acf6a9c9f454ebf041f74.exe	98
PID 4212 wrote to memory of 3408	4212	3b40a93ef10acf6a9c9f454ebf041f74.exe	98
PID 4212 wrote to memory of 3408	4212	3b40a93ef10acf6a9c9f454ebf041f74.exe	98

C:\Users\Admin\AppData\Local\Temp\3b40a93ef10acf6a9c9f454ebf041f74.exe
"C:\Users\Admin\AppData\Local\Temp\3b40a93ef10acf6a9c9f454ebf041f74.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4212
- C:\Users\Admin\AppData\Local\Temp\fcbnaf.exe
  "C:\Users\Admin\AppData\Local\Temp\fcbnaf.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  PID:3408

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=4048 --field-trial-handle=2244,i,11878111470816612087,2265290141962607370,262144 --variations-seed-version /prefetch:8
1⤵
PID:4660

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\fcbnaf.exe

Filesize
85KB

MD5
190659800bfd18cfcc9d7320e06d2eeb

SHA1
aafa939c00b12dd36d972208876331e537546366

SHA256
457311ac2bff31b078c5d0a7443d082ae5de67999dfed73bebf0df0cb2227b90

SHA512
f564d486e2c176bf239a314fb9b6f48835f5a332b2433651dec8c040a8c78f12bee99eb2e6e911377a5b50395043eff002c973499ec5fbb90dbcf4d95f4c5500

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