21a7d33e128e14b06384a852f2f066327296a3d80a123e6f5655f4931c1505ea

Analysis

max time kernel
48s
max time network
52s
platform
windows7_x64
resource
win7-20220901-en
resource tags

arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
submitted
29/10/2022, 00:56

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General

Target

21a7d33e128e14b06384a852f2f066327296a3d80a123e6f5655f4931c1505ea.exe
Size

37KB
MD5

0c40b220bc9034aa85c32b867a9cbffa
SHA1

93438960fa2b164610807e3dba09501fbb706727
SHA256

21a7d33e128e14b06384a852f2f066327296a3d80a123e6f5655f4931c1505ea
SHA512

acb8f917a66c19aaf3e16a077ecd6525e533297216efafc71acfca89e6d23c9eef28a782e66e79fb8c1c2eaa97574066d07a647eea1ec3a74682649e57851ba3
SSDEEP

768:qzfVPmmBmD5zVzhHWerFeZ2WoWSPoR+LzswSp5gFnZiFJzu86rwb:gVPmmBmDdVFHWe4oFLlSp5gFnZiFD6ry

Score

8^/10

persistence

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1352	iexplorer.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\ = "C:\\Windows\\system32\\iexplorer.exe"	iexplorer.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\system32\iexplorer.exe	21a7d33e128e14b06384a852f2f066327296a3d80a123e6f5655f4931c1505ea.exe
File opened for modification	C:\Windows\system32\iexplorer.exe	21a7d33e128e14b06384a852f2f066327296a3d80a123e6f5655f4931c1505ea.exe

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

System Information Discovery
T1082

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
1544	21a7d33e128e14b06384a852f2f066327296a3d80a123e6f5655f4931c1505ea.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1352	iexplorer.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1352	iexplorer.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1544 wrote to memory of 1352	1544	21a7d33e128e14b06384a852f2f066327296a3d80a123e6f5655f4931c1505ea.exe	26
PID 1544 wrote to memory of 1352	1544	21a7d33e128e14b06384a852f2f066327296a3d80a123e6f5655f4931c1505ea.exe	26
PID 1544 wrote to memory of 1352	1544	21a7d33e128e14b06384a852f2f066327296a3d80a123e6f5655f4931c1505ea.exe	26

C:\Users\Admin\AppData\Local\Temp\21a7d33e128e14b06384a852f2f066327296a3d80a123e6f5655f4931c1505ea.exe
"C:\Users\Admin\AppData\Local\Temp\21a7d33e128e14b06384a852f2f066327296a3d80a123e6f5655f4931c1505ea.exe"
1⤵
- Drops file in System32 directory
- Suspicious behavior: RenamesItself
- Suspicious use of WriteProcessMemory
PID:1544
- C:\Windows\system32\iexplorer.exe
  "C:\Windows\system32\iexplorer.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:1352

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\System32\iexplorer.exe

Filesize
37KB

MD5
0c40b220bc9034aa85c32b867a9cbffa

SHA1
93438960fa2b164610807e3dba09501fbb706727

SHA256
21a7d33e128e14b06384a852f2f066327296a3d80a123e6f5655f4931c1505ea

SHA512
acb8f917a66c19aaf3e16a077ecd6525e533297216efafc71acfca89e6d23c9eef28a782e66e79fb8c1c2eaa97574066d07a647eea1ec3a74682649e57851ba3

Download Submit
C:\Windows\system32\iexplorer.exe

Filesize
37KB

MD5
0c40b220bc9034aa85c32b867a9cbffa

SHA1
93438960fa2b164610807e3dba09501fbb706727

SHA256
21a7d33e128e14b06384a852f2f066327296a3d80a123e6f5655f4931c1505ea

SHA512
acb8f917a66c19aaf3e16a077ecd6525e533297216efafc71acfca89e6d23c9eef28a782e66e79fb8c1c2eaa97574066d07a647eea1ec3a74682649e57851ba3

Download Submit
memory/1352-60-0x000007FEF3760000-0x000007FEF4183000-memory.dmp

Filesize
10.1MB

Download
memory/1352-61-0x000007FEF26C0000-0x000007FEF3756000-memory.dmp

Filesize
16.6MB

Download
memory/1544-54-0x000007FEF4190000-0x000007FEF4BB3000-memory.dmp

Filesize
10.1MB

Download
memory/1544-55-0x000007FEF30F0000-0x000007FEF4186000-memory.dmp

Filesize
16.6MB

Download
memory/1544-56-0x000007FEFBB71000-0x000007FEFBB73000-memory.dmp

Filesize
8KB

Download