336bd07cb8acb8530f01cb88ccdcf689837197fc6a91705730d048466fb83bd5

Analysis

max time kernel
0s
max time network
113s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-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

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\Control Panel\International\Geo\Nation	4a5a701b008750bf9bbc6ea3fa0bae44.exe

Executes dropped EXE 1 IoCs

pid	Process
4092	regperf.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\ld100.tmp	regperf.exe
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

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4092	regperf.exe
4092	regperf.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	4944	4a5a701b008750bf9bbc6ea3fa0bae44.exe
Token: SeDebugPrivilege	4092	regperf.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 4944 wrote to memory of 4092	4944	4a5a701b008750bf9bbc6ea3fa0bae44.exe	16
PID 4944 wrote to memory of 4092	4944	4a5a701b008750bf9bbc6ea3fa0bae44.exe	16
PID 4944 wrote to memory of 4092	4944	4a5a701b008750bf9bbc6ea3fa0bae44.exe	16
PID 4092 wrote to memory of 612	4092	regperf.exe	5
PID 4944 wrote to memory of 1536	4944	4a5a701b008750bf9bbc6ea3fa0bae44.exe	19
PID 4944 wrote to memory of 1536	4944	4a5a701b008750bf9bbc6ea3fa0bae44.exe	19
PID 4944 wrote to memory of 1536	4944	4a5a701b008750bf9bbc6ea3fa0bae44.exe	19

C:\Windows\system32\winlogon.exe
winlogon.exe
1⤵
PID:612

C:\Users\Admin\AppData\Local\Temp\4a5a701b008750bf9bbc6ea3fa0bae44.exe
"C:\Users\Admin\AppData\Local\Temp\4a5a701b008750bf9bbc6ea3fa0bae44.exe"
1⤵
- Checks computer location settings
- Drops file in System32 directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4944
- 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:4092
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\4A5A70~1.EXE > nul
  2⤵
  PID:1536

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

regperf.exe

Path C:\Windows\SysWOW64\regperf.exe
Size 49KB
SHA256 7c0c80e1ff3022aa39302b33598eb418bc4279c5657bdda622faf9151a00581f
MD5 fc69cbe7d8e912b71d71134c0104c006
SHA1 54f437f25944acc1436b147ccf9c419985f7fd2f
SHA512 df1f231ea8b5aff826dd24ae907098fd0618f1e7df16f9b42fdc9c7137d62c2b686c0ee6e7a73b33bf6ac2c06e028c150af1a771e1681bce43c574d0fd09a771
SSDEEP 1536:sYBYYj+7geXXPzy/ps1VGjJGMQ10aK8UmRZUF44y:sY7FOkgZydy
MD5 SHA1 SHA512 SSDEEP

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