b3fa60d6486841972d2841d169c7910702c36646d5299b1482e37c97bcb4ba62

Analysis

max time kernel
150s
max time network
119s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
24/01/2024, 07:44

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General

Target

71aa3d84be9fad10b5bc39864f475b7d.exe
Size

10KB
MD5

71aa3d84be9fad10b5bc39864f475b7d
SHA1

1b3075e186498ed72f2d9b228a9394ed879ebb97
SHA256

b3fa60d6486841972d2841d169c7910702c36646d5299b1482e37c97bcb4ba62
SHA512

aac9ee26cfcad0cc0d621c02b635225d84f46e2f59cda78068d200be12e4748c0712b5fc4af262b240ee715bf3b9656d5c96ad9c6393399ec58e8add145c5eb6
SSDEEP

192:jc4rZ8ByPv/t0XrQz5C/tESfZzsZCvDFFaNJhLkwcud2DH9VwGfctdE:LrqAvVeri5JODTaNJawcudoD7UI

Score

7^/10

upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1748	1B3E.tmp

Loads dropped DLL 2 IoCs

pid	Process
2220	71aa3d84be9fad10b5bc39864f475b7d.exe
2220	71aa3d84be9fad10b5bc39864f475b7d.exe

UPX packed file 2 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/memory/2220-0-0x0000000000400000-0x000000000040C000-memory.dmp	upx
behavioral1/memory/2220-23-0x0000000000400000-0x000000000040C000-memory.dmp	upx

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

System Information Discovery
T1082

Runs .reg file with regedit 1 IoCs

pid	Process
2748	regedit.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2220 wrote to memory of 1748	2220	71aa3d84be9fad10b5bc39864f475b7d.exe	28
PID 2220 wrote to memory of 1748	2220	71aa3d84be9fad10b5bc39864f475b7d.exe	28
PID 2220 wrote to memory of 1748	2220	71aa3d84be9fad10b5bc39864f475b7d.exe	28
PID 2220 wrote to memory of 1748	2220	71aa3d84be9fad10b5bc39864f475b7d.exe	28
PID 1748 wrote to memory of 2732	1748	1B3E.tmp	29
PID 1748 wrote to memory of 2732	1748	1B3E.tmp	29
PID 1748 wrote to memory of 2732	1748	1B3E.tmp	29
PID 1748 wrote to memory of 2732	1748	1B3E.tmp	29
PID 2732 wrote to memory of 2748	2732	cmd.exe	31
PID 2732 wrote to memory of 2748	2732	cmd.exe	31
PID 2732 wrote to memory of 2748	2732	cmd.exe	31
PID 2732 wrote to memory of 2748	2732	cmd.exe	31

C:\Users\Admin\AppData\Local\Temp\71aa3d84be9fad10b5bc39864f475b7d.exe
"C:\Users\Admin\AppData\Local\Temp\71aa3d84be9fad10b5bc39864f475b7d.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2220
- C:\Users\Admin\AppData\Local\Temp\1B3E.tmp
  C:\Users\Admin\AppData\Local\Temp\1B3E.tmp C:\Users\Admin\AppData\Local\Temp
  2⤵
  - Executes dropped EXE
  - Suspicious use of WriteProcessMemory
  PID:1748
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmpfile0.bat" "
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2732
  - - C:\Windows\SysWOW64\regedit.exe
      REGEDIT /S "c:\WINUPDTE\update.reg"
      4⤵
      Runs .reg file with regedit
      PID:2748

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\tmpfile0.bat

Filesize
470B

MD5
d6b8e57c16ba9a9fd84b83b7f1d10b38

SHA1
578b29ba9434ab4d3aed03aea30f43c910d03529

SHA256
76be5caac62568a2d4fd22b1148c4cbea7039934b8e0390a95812170aeddb268

SHA512
378d574020f4a33230cca9fc360af3a8c8bcd98328f72f2be060149a0608f0142df061c2628328beee15c9d6e88e3cd96a8f35e84bb60ed48236fd593babe1ad

Download Submit
\Users\Admin\AppData\Local\Temp\1B3E.tmp

Filesize
14KB

MD5
56445d86485d94417fcbf69a0c02fd11

SHA1
22e0c8f7076f0380bba6ec80f6640e5e933be969

SHA256
930609993526b9fcaf657a1dc77960ad1004ba6acb0e5688b49756c1c384046a

SHA512
a1b866ad7f448f9cec6843e9801d17269b2eb21df062ed425d046a92b63cb41469f8d3130c8b5c1d3bdca29540f09d442ff8d638f13ee67c720416cf5abe530e

Download Submit
memory/1748-11-0x0000000000400000-0x0000000000407000-memory.dmp

Filesize
28KB

Download
memory/1748-27-0x0000000000400000-0x0000000000407000-memory.dmp

Filesize
28KB

Download
memory/2220-0-0x0000000000400000-0x000000000040C000-memory.dmp

Filesize
48KB

Download
memory/2220-3-0x0000000000160000-0x0000000000167000-memory.dmp

Filesize
28KB

Download
memory/2220-10-0x0000000000160000-0x0000000000167000-memory.dmp

Filesize
28KB

Download
memory/2220-23-0x0000000000400000-0x000000000040C000-memory.dmp

Filesize
48KB

Download
memory/2220-24-0x0000000000160000-0x0000000000167000-memory.dmp

Filesize
28KB

Download
memory/2220-26-0x0000000000160000-0x0000000000167000-memory.dmp

Filesize
28KB

Download