22987c398c668599e79f7f89a3d6b92a9c9f2d9dec98cbbea2e1ab5e6d3edbff

Analysis

max time kernel
143s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
02/02/2024, 19:30

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General

Target

8a58fd1f81e28a9960ff179b1c9a2279.exe
Size

253KB
MD5

8a58fd1f81e28a9960ff179b1c9a2279
SHA1

a0d4e5cf996806dad7beaadefedd521c2400a1e4
SHA256

22987c398c668599e79f7f89a3d6b92a9c9f2d9dec98cbbea2e1ab5e6d3edbff
SHA512

cc309a92567d69d0cc2547a8d2fa0748bf57ec6fec500223ceb0f3826858a223e853bb317b9867a729f683ca3ad625f727c508cba0d5f0a5e88221c4c1cde05b
SSDEEP

6144:2Z+118fkqKFy/1RWBT5CI9c0UJA1wmQDu+FwZm/G/HclNy:eMqKFs1s15CIJUJUw5q+Fp/G/8S

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
4620	Au_.exe

Loads dropped DLL 4 IoCs

pid	Process
4620	Au_.exe
4620	Au_.exe
4620	Au_.exe
4620	Au_.exe

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

System Information Discovery
T1082

NSIS installer 2 IoCs

installer

resource	yara_rule
behavioral2/files/0x0007000000023213-3.dat	nsis_installer_1
behavioral2/files/0x0007000000023213-3.dat	nsis_installer_2

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1860 wrote to memory of 4620	1860	8a58fd1f81e28a9960ff179b1c9a2279.exe	83
PID 1860 wrote to memory of 4620	1860	8a58fd1f81e28a9960ff179b1c9a2279.exe	83
PID 1860 wrote to memory of 4620	1860	8a58fd1f81e28a9960ff179b1c9a2279.exe	83

C:\Users\Admin\AppData\Local\Temp\8a58fd1f81e28a9960ff179b1c9a2279.exe
"C:\Users\Admin\AppData\Local\Temp\8a58fd1f81e28a9960ff179b1c9a2279.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1860
- C:\Users\Admin\AppData\Local\Temp\~nsu.tmp\Au_.exe
  "C:\Users\Admin\AppData\Local\Temp\~nsu.tmp\Au_.exe" _?=C:\Users\Admin\AppData\Local\Temp\
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  PID:4620

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

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\nsf6D32.tmp\System.dll

Filesize
11KB

MD5
c17103ae9072a06da581dec998343fc1

SHA1
b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

SHA256
dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

SHA512
d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsf6D32.tmp\UserInfo.dll

Filesize
4KB

MD5
7579ade7ae1747a31960a228ce02e666

SHA1
8ec8571a296737e819dcf86353a43fcf8ec63351

SHA256
564c80dec62d76c53497c40094db360ff8a36e0dc1bda8383d0f9583138997f5

SHA512
a88bc56e938374c333b0e33cb72951635b5d5a98b9cb2d6785073cbcad23bf4c0f9f69d3b7e87b46c76eb03ced9bb786844ce87656a9e3df4ca24acf43d7a05b

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsf6D32.tmp\nsDialogs.dll

Filesize
9KB

MD5
c10e04dd4ad4277d5adc951bb331c777

SHA1
b1e30808198a3ae6d6d1cca62df8893dc2a7ad43

SHA256
e31ad6c6e82e603378cb6b80e67d0e0dcd9cf384e1199ac5a65cb4935680021a

SHA512
853a5564bf751d40484ea482444c6958457cb4a17fb973cf870f03f201b8b2643be41bccde00f6b2026dc0c3d113e6481b0dc4c7b0f3ae7966d38c92c6b5862e

Download Submit
C:\Users\Admin\AppData\Local\Temp\~nsu.tmp\Au_.exe

Filesize
253KB

MD5
8a58fd1f81e28a9960ff179b1c9a2279

SHA1
a0d4e5cf996806dad7beaadefedd521c2400a1e4

SHA256
22987c398c668599e79f7f89a3d6b92a9c9f2d9dec98cbbea2e1ab5e6d3edbff

SHA512
cc309a92567d69d0cc2547a8d2fa0748bf57ec6fec500223ceb0f3826858a223e853bb317b9867a729f683ca3ad625f727c508cba0d5f0a5e88221c4c1cde05b

Download Submit