03b8b45f2179a7b2e16d6e1ef1b72f0f3755eeaab95525882d6808a86a76a642

Analysis

max time kernel
839s
max time network
848s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
03/09/2024, 12:40

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General

Target

YemozaV21.exe
Size

76.7MB
MD5

e1e19e165ab9b5f15dd0f2b82a63d327
SHA1

e1c092781ac19108d98f5067ef63a544596066bb
SHA256

f222b3917e62359233f7c1afb4abda7671472116859fcbc39f45ead7928a006c
SHA512

a2558374ccf361372b47078684ed9aa97d47b67f65b7dfcc9f5d8bc3e033115594a4c0326e498503729ae43fadab2711ce10400c7d343939474515e68267e1a7
SSDEEP

1572864:y4gPXMorgR79oRL0nwiHxWjU31FsbyemoVvo6s/9ZrASbxw7:y4AcGgRiRwnZxWs1a2ho9xs//Auw7

Score

7^/10

discovery

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1512	YemozaV21.exe

Loads dropped DLL 5 IoCs

pid	Process
2704	YemozaV21.exe
2704	YemozaV21.exe
2704	YemozaV21.exe
2704	YemozaV21.exe
1512	YemozaV21.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	YemozaV21.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeSecurityPrivilege	2704	YemozaV21.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2704 wrote to memory of 1512	2704	YemozaV21.exe	30
PID 2704 wrote to memory of 1512	2704	YemozaV21.exe	30
PID 2704 wrote to memory of 1512	2704	YemozaV21.exe	30
PID 2704 wrote to memory of 1512	2704	YemozaV21.exe	30

C:\Users\Admin\AppData\Local\Temp\YemozaV21.exe
"C:\Users\Admin\AppData\Local\Temp\YemozaV21.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2704
- C:\Users\Admin\AppData\Local\Temp\2lWHZPvtsHYydFpzd27bXNwbLzE\YemozaV21.exe
  C:\Users\Admin\AppData\Local\Temp\2lWHZPvtsHYydFpzd27bXNwbLzE\YemozaV21.exe
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  PID:1512

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\2lWHZPvtsHYydFpzd27bXNwbLzE\ffmpeg.dll

Filesize
2.8MB

MD5
cc00135fe47c2e1e3c2afdae364e343e

SHA1
b6f2edebeae328004537147e4743523f1eba88fe

SHA256
5dad57ea08d8af1e78889e7b9191a0d4cb55e6124a447a8ab352064ca20a200d

SHA512
cbd7392ffb932241eaa3d67e4df7e2fa1163529e46ecf7ed17eb80fe5f36895ed00b39feccbb9966cfaebafba83b576a4f9a17593bb2bb61d8df70703d90b35f

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsoA0C3.tmp\StdUtils.dll

Filesize
100KB

MD5
c6a6e03f77c313b267498515488c5740

SHA1
3d49fc2784b9450962ed6b82b46e9c3c957d7c15

SHA256
b72e9013a6204e9f01076dc38dabbf30870d44dfc66962adbf73619d4331601e

SHA512
9870c5879f7b72836805088079ad5bbafcb59fc3d9127f2160d4ec3d6e88d3cc8ebe5a9f5d20a4720fe6407c1336ef10f33b2b9621bc587e930d4cbacf337803

Download Submit
\Users\Admin\AppData\Local\Temp\nsoA0C3.tmp\System.dll

Filesize
12KB

MD5
0d7ad4f45dc6f5aa87f606d0331c6901

SHA1
48df0911f0484cbe2a8cdd5362140b63c41ee457

SHA256
3eb38ae99653a7dbc724132ee240f6e5c4af4bfe7c01d31d23faf373f9f2eaca

SHA512
c07de7308cb54205e8bd703001a7fe4fd7796c9ac1b4bb330c77c872bf712b093645f40b80ce7127531fe6746a5b66e18ea073ab6a644934abed9bb64126fea9

Download Submit
\Users\Admin\AppData\Local\Temp\nsoA0C3.tmp\nsis7z.dll

Filesize
424KB

MD5
80e44ce4895304c6a3a831310fbf8cd0

SHA1
36bd49ae21c460be5753a904b4501f1abca53508

SHA256
b393f05e8ff919ef071181050e1873c9a776e1a0ae8329aefff7007d0cadf592

SHA512
c8ba7b1f9113ead23e993e74a48c4427ae3562c1f6d9910b2bbe6806c9107cf7d94bc7d204613e4743d0cd869e00dafd4fb54aad1e8adb69c553f3b9e5bc64df

Download Submit