336bd07cb8acb8530f01cb88ccdcf689837197fc6a91705730d048466fb83bd5

Analysis

max time kernel
117s
max time network
120s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
08/01/2024, 03:45

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General

Target
4a5a701b008750bf9bbc6ea3fa0bae44.exe
Size 22KB
Sample240108-ea86tsbeg7
SHA256 336bd07cb8acb8530f01cb88ccdcf689837197fc6a91705730d048466fb83bd5
MD5 4a5a701b008750bf9bbc6ea3fa0bae44
SHA1 8779a5ece68f5d47830e24bda57c8b0066df889d
SHA512 df0c256738b0011c5db96697df96a3302638aed6afeec23057981611117959bb9ef335ccb8db83ec8e0522c1494617e26ca3e48892448014d3d03ce2133b085c
SSDEEP 384:lEjszjedk3P7pGEqhFmiUGuSyLWmG5J2n0Lx7QHChprt6zk3/PcRaJIDhT/DTQtG:lBzKJEqhFaGuzn0CCDrskvPXJwN/ovIr
MD5 SHA1 SHA512 SSDEEP

Score

7^/10

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
1280	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
2220	regperf.exe

Loads dropped DLL 2 IoCs

pid	Process
1920	4a5a701b008750bf9bbc6ea3fa0bae44.exe
1920	4a5a701b008750bf9bbc6ea3fa0bae44.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\ld100.tmp	regperf.exe
File created	C:\Windows\SysWOW64\regperf.exe	4a5a701b008750bf9bbc6ea3fa0bae44.exe
File opened for modification	C:\Windows\SysWOW64\regperf.exe	4a5a701b008750bf9bbc6ea3fa0bae44.exe
File created	C:\Windows\SysWOW64\ld100.tmp	regperf.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2220	regperf.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	1920	4a5a701b008750bf9bbc6ea3fa0bae44.exe
Token: SeDebugPrivilege	2220	regperf.exe

Suspicious use of UnmapMainImage 1 IoCs

pid	Process
1920	4a5a701b008750bf9bbc6ea3fa0bae44.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 1920 wrote to memory of 2220	1920	4a5a701b008750bf9bbc6ea3fa0bae44.exe	15
PID 1920 wrote to memory of 2220	1920	4a5a701b008750bf9bbc6ea3fa0bae44.exe	15
PID 1920 wrote to memory of 2220	1920	4a5a701b008750bf9bbc6ea3fa0bae44.exe	15
PID 1920 wrote to memory of 2220	1920	4a5a701b008750bf9bbc6ea3fa0bae44.exe	15
PID 2220 wrote to memory of 420	2220	regperf.exe	1
PID 1920 wrote to memory of 1280	1920	4a5a701b008750bf9bbc6ea3fa0bae44.exe	16
PID 1920 wrote to memory of 1280	1920	4a5a701b008750bf9bbc6ea3fa0bae44.exe	16
PID 1920 wrote to memory of 1280	1920	4a5a701b008750bf9bbc6ea3fa0bae44.exe	16
PID 1920 wrote to memory of 1280	1920	4a5a701b008750bf9bbc6ea3fa0bae44.exe	16

C:\Windows\system32\winlogon.exe
winlogon.exe
1⤵
PID:420

C:\Users\Admin\AppData\Local\Temp\4a5a701b008750bf9bbc6ea3fa0bae44.exe
"C:\Users\Admin\AppData\Local\Temp\4a5a701b008750bf9bbc6ea3fa0bae44.exe"
1⤵
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:1920
- C:\Windows\SysWOW64\regperf.exe
  C:\Windows\system32\regperf.exe
  2⤵
  - Executes dropped EXE
  - Drops file in System32 directory
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2220
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\4A5A70~1.EXE > nul
  2⤵
  - Deletes itself
  PID:1280

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

memory/420-12-0x00000000001D0000-0x00000000001D1000-memory.dmp

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