ad5e51d953b7b93040aef1df73080d0fb8148514c76a28489f35f4af3e86220a

Analysis

max time kernel
1s
max time network
94s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
31/12/2023, 03:26

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General

Target

26553c8b9b9a411e028d8da9eedc9c8c.exe
Size

13.4MB
MD5

26553c8b9b9a411e028d8da9eedc9c8c
SHA1

722e18e5c050b69af80d711beca3d26e15c40f44
SHA256

ad5e51d953b7b93040aef1df73080d0fb8148514c76a28489f35f4af3e86220a
SHA512

66f1069bbceba4a56603d02a82dfd9be56fee4d79b93e6223c8f42bd6d30f5d88e83c594ed89ba296c7190de9a84f64186d86c3ff98da901d4bdaf9fed3ab1f5
SSDEEP

393216:FpAzXLKi/KForUnnXFwtAdPUqJyBTIm1GQvn:FpAfnlAnXFBdPU4yT1GQvn

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
1244	InstallTools.exe
3476	bytefence-installer-5.5.0.7.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/0x00070000000231f5-6.dat	nsis_installer_1
behavioral2/files/0x00070000000231f5-6.dat	nsis_installer_2

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1900 wrote to memory of 1244	1900	26553c8b9b9a411e028d8da9eedc9c8c.exe	29
PID 1900 wrote to memory of 1244	1900	26553c8b9b9a411e028d8da9eedc9c8c.exe	29
PID 1900 wrote to memory of 1244	1900	26553c8b9b9a411e028d8da9eedc9c8c.exe	29
PID 1900 wrote to memory of 3476	1900	26553c8b9b9a411e028d8da9eedc9c8c.exe	30
PID 1900 wrote to memory of 3476	1900	26553c8b9b9a411e028d8da9eedc9c8c.exe	30
PID 1900 wrote to memory of 3476	1900	26553c8b9b9a411e028d8da9eedc9c8c.exe	30

C:\Users\Admin\AppData\Local\Temp\26553c8b9b9a411e028d8da9eedc9c8c.exe
"C:\Users\Admin\AppData\Local\Temp\26553c8b9b9a411e028d8da9eedc9c8c.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1900
- C:\Users\Admin\AppData\Local\Temp\InstallTools.exe
  "C:\Users\Admin\AppData\Local\Temp\InstallTools.exe" "C:\Users\Admin\AppData\Local\Temp\26553c8b9b9a411e028d8da9eedc9c8c.exe" Software\ByteFence INSNDE "C:\Users\Admin\AppData\Local\Temp\26553c8b9b9a411e028d8da9eedc9c8c.exe" /mode=s /url=logs.bytefence.com/event /product=Bytefence
  2⤵
  - Executes dropped EXE
  PID:1244
- C:\Users\Admin\AppData\Local\Temp\bytefence-installer-5.5.0.7.exe
  "C:\Users\Admin\AppData\Local\Temp\bytefence-installer-5.5.0.7.exe" /LM=3 /INSTEX /cd=12345 /thankyou /IGNORE="C:\Users\Admin\AppData\Local\Temp\26553c8b9b9a411e028d8da9eedc9c8c.exe"
  2⤵
  - Executes dropped EXE
  PID:3476

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\InstallTools.exe

Filesize
92KB

MD5
e5281ee73fc928d3153126b0eda64192

SHA1
2e76578e99f09fafb4eb1b3cc5e417bb421bf6e0

SHA256
e6413c1163a3cbb2819d20abd86e58b1d57c4b0a3568861ac68a1ac8f5e6b06f

SHA512
795907219e41e57e99b6c92ab71f6b5c9c2d4c0f1cc7b6dd2fcaf3e657606a1ea6f7c0ba0d9491dc958bbf88de679adbed9681bcb48f4ab4ae7e7d327eea1270

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