55b8e128c0b222d7d07cbbfb38297fa9cfbf7cd77da9129ef608005d02d90b52

Analysis

max time kernel
0s
max time network
127s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
25/12/2023, 23:28

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General

Target

433b60ec8569dc571c8d4eafcf9fee48.exe
Size

123KB
MD5

433b60ec8569dc571c8d4eafcf9fee48
SHA1

7cc9824a16123c544de418762e4d34b86bd4377d
SHA256

55b8e128c0b222d7d07cbbfb38297fa9cfbf7cd77da9129ef608005d02d90b52
SHA512

b9b0d3218689c0a03b19ff42069335fc7a4aa13f4b07a3adc3af364cc536a3be2b0739c0ca4b334f9ba5ca0a23272a46590e2240639b34664d13d06b3d808096
SSDEEP

3072:OeSQ41MZrrOwzrq5Ss9eYfphfFQkUcot3EpeBWLL7ZYD:OVYrJrOSsRwcpA

Score

7^/10

upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2592	iaccess32.exe

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4560-0-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral2/memory/4560-5-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral2/memory/2592-6-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral2/files/0x000300000001e982-4.dat	upx
behavioral2/files/0x000300000001e982-3.dat	upx
behavioral2/memory/2592-58-0x0000000000400000-0x000000000042E000-memory.dmp	upx

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\iaccess32.exe	433b60ec8569dc571c8d4eafcf9fee48.exe
File created	C:\Windows\tmlpcert2007	iaccess32.exe

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

System Information Discovery
T1082

Runs regedit.exe 1 IoCs

pid	Process
2548	regedit.exe

Suspicious use of SetWindowsHookEx 5 IoCs

pid	Process
4560	433b60ec8569dc571c8d4eafcf9fee48.exe
2592	iaccess32.exe
2592	iaccess32.exe
2592	iaccess32.exe
2592	iaccess32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4560 wrote to memory of 2592	4560	433b60ec8569dc571c8d4eafcf9fee48.exe	21
PID 4560 wrote to memory of 2592	4560	433b60ec8569dc571c8d4eafcf9fee48.exe	21
PID 4560 wrote to memory of 2592	4560	433b60ec8569dc571c8d4eafcf9fee48.exe	21

C:\Users\Admin\AppData\Local\Temp\433b60ec8569dc571c8d4eafcf9fee48.exe
"C:\Users\Admin\AppData\Local\Temp\433b60ec8569dc571c8d4eafcf9fee48.exe"
1⤵
- Drops file in Windows directory
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4560
- C:\Windows\iaccess32.exe
  C:\Windows\iaccess32.exe
  2⤵
  - Executes dropped EXE
  - Drops file in Windows directory
  - Suspicious use of SetWindowsHookEx
  PID:2592

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k NetworkService -p -s TapiSrv
1⤵
PID:4892

C:\Windows\SysWOW64\regsvr32.exe
regsvr32.exe /s "C:\Windows\system32\egaccess4_1071.dll"
1⤵
PID:4696

C:\Windows\SysWOW64\regedit.exe
"C:\Windows\System32\regedit.exe" /s C:\Windows\tmlpcert2007
1⤵
- Runs regedit.exe
PID:2548

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:\Windows\iaccess32.exe

Filesize
92KB

MD5
7e9b4370ec7286ad2fbe71f5e067dd44

SHA1
65abc2b91c7253b780cdad58e019aa1afdea84fa

SHA256
b948bc89a5db889bc922440e2b130a032d961de35017b17e9895c6676c9c4e11

SHA512
9386bfd582acdc1d4df370065bac70bbd080217ac02cadc12f0efa63a0d373999dc5ba92d865b523f3624b8f888bdac6b9b68f5f47c75a4f3d58025162aaf926

Download Submit
C:\Windows\iaccess32.exe

Filesize
94KB

MD5
e74e19f4d2ca4ec83d67c210e82cf79c

SHA1
2cd91350c1c36dca410f91b2c4eb7256832c7875

SHA256
d692a2913880dc92f972eee222201165c8c7ce825d04ed361ab9b8a39ba15906

SHA512
c860909d2041b828ed5dd571e9754405e87bb65c7e6cfff830959ca33e4ab51ab0b3a189aaa3ed3ed26c140bc8a1355060f4c0fdfd7c9ac2644dd6ea5ae44cf5

Download Submit
memory/2592-6-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/2592-58-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/4560-0-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/4560-5-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/4696-28-0x0000000010000000-0x0000000010047000-memory.dmp

Filesize
284KB

Download
memory/4696-60-0x0000000010000000-0x0000000010047000-memory.dmp

Filesize
284KB

Download