b53c749c59757ad6567c5d2bb43b296a27d5daaef09153a0f69bacd2978dd69c

Analysis

max time kernel
160s
max time network
166s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
27-03-2024 03:37

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General

Target

b0ec505ad10e7e4dd86ceb2d35693e58.exe
Size

30KB
MD5

b0ec505ad10e7e4dd86ceb2d35693e58
SHA1

30dbceb806db8e82e9badbbd0c0d4ae6e4ec07bb
SHA256

b53c749c59757ad6567c5d2bb43b296a27d5daaef09153a0f69bacd2978dd69c
SHA512

f0f84a028b351352df3772e49d04a0266fbcc6b3e019f54648615b508bf308f90f7afbb83e498cde632c4e9704d5ea4aced3779a79ced249d15b5cee28734d72
SSDEEP

384:bM7Q0pjC4GybxMv01d3AcASBQMf6i/zzzcYgUPSzn+p8Z:b/yC4GyNM01GuQMNXw2PSjU8Z

Score

7^/10

Malware Config

Signatures

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-1-5-21-609813121-2907144057-1731107329-1000\Control Panel\International\Geo\Nation	b0ec505ad10e7e4dd86ceb2d35693e58.exe

Executes dropped EXE 1 IoCs

pid	Process
2260	retln.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 3744 wrote to memory of 2260	3744	b0ec505ad10e7e4dd86ceb2d35693e58.exe	90
PID 3744 wrote to memory of 2260	3744	b0ec505ad10e7e4dd86ceb2d35693e58.exe	90
PID 3744 wrote to memory of 2260	3744	b0ec505ad10e7e4dd86ceb2d35693e58.exe	90

C:\Users\Admin\AppData\Local\Temp\b0ec505ad10e7e4dd86ceb2d35693e58.exe
"C:\Users\Admin\AppData\Local\Temp\b0ec505ad10e7e4dd86ceb2d35693e58.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3744
- C:\Users\Admin\AppData\Local\Temp\retln.exe
  "C:\Users\Admin\AppData\Local\Temp\retln.exe"
  2⤵
  - Executes dropped EXE
  PID:2260

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\retln.exe

Filesize
30KB

MD5
81e22ff6ea4066c7092171f6a0d2eadd

SHA1
11f2330509aa9ef108b11cbf16244d9c20dee887

SHA256
78cf33194d79071ec32d5e3e5ae9467eb0ab8796096449c4a6ac4e8df12d7ae7

SHA512
289f1317dd96bef99e35655f0a6ee9c353ea208fc837eb17532ad2fbf4488c596bb81d3066fcbbc9043f05822b0aac1068ba0ebc355dc94bd93bd5fc6bf0c20a

Download Submit
memory/2260-20-0x0000000002010000-0x0000000002016000-memory.dmp

Filesize
24KB

Download
memory/3744-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/3744-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/3744-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download