165a0dc5f795bd08be53a7ddc9a0c34968a5b1c24136853bd6a4a4b6c50f3b02

Analysis

max time kernel
118s
max time network
122s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
26/12/2023, 02:00

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General

Target

4b227fb75474ef3a0749e244c9ea641b.exe
Size

305KB
MD5

4b227fb75474ef3a0749e244c9ea641b
SHA1

2b540bc3f3425e0590462ec26e9bde8eb49d7ec2
SHA256

165a0dc5f795bd08be53a7ddc9a0c34968a5b1c24136853bd6a4a4b6c50f3b02
SHA512

a0956f2e09ce0694e965ef39398f1890daf20362861059dd8177cec25446956b368270b1f4e5566248b72df469cdf2bb4e141b3c5dfa0a8e5e78c7c1a6e698a6
SSDEEP

6144:ZQ3lRfUnM3DoFFjuvf/toNQ8dqLuJoU0U7Hd8CntQOHHM+HFFTjXdpNnT2gG:WRfUnM3D0Fw/tN8dkmLtpHHHrh7a

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2612	Au_.exe

Loads dropped DLL 3 IoCs

pid	Process
1940	4b227fb75474ef3a0749e244c9ea641b.exe
2612	Au_.exe
2612	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
behavioral1/files/0x000900000001225c-2.dat	nsis_installer_1
behavioral1/files/0x000900000001225c-2.dat	nsis_installer_2

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2612	Au_.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1940 wrote to memory of 2612	1940	4b227fb75474ef3a0749e244c9ea641b.exe	28
PID 1940 wrote to memory of 2612	1940	4b227fb75474ef3a0749e244c9ea641b.exe	28
PID 1940 wrote to memory of 2612	1940	4b227fb75474ef3a0749e244c9ea641b.exe	28
PID 1940 wrote to memory of 2612	1940	4b227fb75474ef3a0749e244c9ea641b.exe	28

C:\Users\Admin\AppData\Local\Temp\4b227fb75474ef3a0749e244c9ea641b.exe
"C:\Users\Admin\AppData\Local\Temp\4b227fb75474ef3a0749e244c9ea641b.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1940
- 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
  - Suspicious behavior: GetForegroundWindowSpam
  PID:2612

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

\Users\Admin\AppData\Local\Temp\nso8F17.tmp\System.dll

Filesize
10KB

MD5
7fbda5b7be6256996d4e59e5f6949918

SHA1
2d36c0e0bfbe450675c6ed044e715abaa85a252a

SHA256
9bb31f7f02231e3166bf52385d804c06da9740e9c6f0bda807b01052ae9fdcd4

SHA512
bc0d36aa6f50041bad05cf48d909ed5a387bff5b111f657591161a288c1be5c20b8c5d69e557b5ea395726d91601b9e6303da81555e053090cfcbf5d44be7f82

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\Users\Admin\AppData\Local\Temp\nso8F17.tmp\nsDialogs.dll

Filesize
9KB

MD5
ef2ba370973a3f8aba1533cb3858921b

SHA1
c2211408f29a46fc26198cddf411694c0e7e0eb8

SHA256
ed575c8bddf21cc6d689646ecfdeafe356e0f9945a282eda79f3b636b77a4453

SHA512
07aac20904fb164ba91b7c619b674d5e0f4d1ec8ba03fbd7e123ef53ff4b134278e01964fb81dfcc2905b760c572a7e13c87114bdb279f1d26632ebe71c628ba

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\Users\Admin\AppData\Local\Temp\~nsu.tmp\Au_.exe

Filesize
305KB

MD5
4b227fb75474ef3a0749e244c9ea641b

SHA1
2b540bc3f3425e0590462ec26e9bde8eb49d7ec2

SHA256
165a0dc5f795bd08be53a7ddc9a0c34968a5b1c24136853bd6a4a4b6c50f3b02

SHA512
a0956f2e09ce0694e965ef39398f1890daf20362861059dd8177cec25446956b368270b1f4e5566248b72df469cdf2bb4e141b3c5dfa0a8e5e78c7c1a6e698a6

Download Submit