3ca0bf28baacf269c3f6a7215516ae6c2181487f006f192ecac3537595a792c2

Analysis

max time kernel
152s
max time network
175s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
12-01-2024 14:20

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General

Target

676A2A0D88A79012300A63092DA090F5B0D0BDFC105541732254E0AE1FEB2FCB.exe
Size

1.7MB
MD5

7687cbe6769001af75b61c8e053221f2
SHA1

5723b7d6c6dbd2a3d1a7671ab95a28921525f5fd
SHA256

676a2a0d88a79012300a63092da090f5b0d0bdfc105541732254e0ae1feb2fcb
SHA512

d52da2ef2a8d4f671b2b69aeb90d85a1627252c6090cc77569bf5a38407f1adb8158c5caf9572c13fecd57bef5bfe50558eca62b744cae699ea8778c251903dc
SSDEEP

24576:eNcBtkdOdTNpGu522pL8cX2QrOtUUqi8BQLvYOHgDD/bcNuh+S1hKlMLkhWgvoNT:51bGCfL8cX2N2UhLAX/+uh+S14sBZ

Score

7^/10

upx

Malware Config

Signatures

Checks BIOS information in registry 2 TTPs 2 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	Windows Loader1.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	Windows Loader1.exe

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-1-5-21-1815711207-1844170477-3539718864-1000\Control Panel\International\Geo\Nation	676A2A0D88A79012300A63092DA090F5B0D0BDFC105541732254E0AE1FEB2FCB.exe

Executes dropped EXE 1 IoCs

pid	Process
4220	Windows Loader1.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral18/files/0x0004000000022505-4.dat	upx
behavioral18/files/0x0004000000022505-10.dat	upx
behavioral18/files/0x0004000000022505-11.dat	upx
behavioral18/memory/4220-12-0x0000000000400000-0x0000000000623000-memory.dmp	upx
behavioral18/memory/4220-75-0x0000000000400000-0x0000000000623000-memory.dmp	upx

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

System Information Discovery
T1082

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key created	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS	Windows Loader1.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\BaseBoardProduct	Windows Loader1.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4220	Windows Loader1.exe
4220	Windows Loader1.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: 33	4220	Windows Loader1.exe
Token: SeIncBasePriorityPrivilege	4220	Windows Loader1.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
4220	Windows Loader1.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4220	Windows Loader1.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1384 wrote to memory of 4220	1384	676A2A0D88A79012300A63092DA090F5B0D0BDFC105541732254E0AE1FEB2FCB.exe	90
PID 1384 wrote to memory of 4220	1384	676A2A0D88A79012300A63092DA090F5B0D0BDFC105541732254E0AE1FEB2FCB.exe	90
PID 1384 wrote to memory of 4220	1384	676A2A0D88A79012300A63092DA090F5B0D0BDFC105541732254E0AE1FEB2FCB.exe	90

C:\Users\Admin\AppData\Local\Temp\676A2A0D88A79012300A63092DA090F5B0D0BDFC105541732254E0AE1FEB2FCB.exe
"C:\Users\Admin\AppData\Local\Temp\676A2A0D88A79012300A63092DA090F5B0D0BDFC105541732254E0AE1FEB2FCB.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1384
- C:\Users\Admin\AppData\Local\Temp\Windows Loader1.exe
  "C:\Users\Admin\AppData\Local\Temp\Windows Loader1.exe"
  2⤵
  - Checks BIOS information in registry
  - Executes dropped EXE
  - Enumerates system info in registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SetWindowsHookEx
  PID:4220

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

C:\Users\Admin\AppData\Local\Temp\Windows Loader1.exe

Filesize
381KB

MD5
a9fc18a63cbbf019fa5a32c18016f67c

SHA1
9f4bab8c6380cb28f71295e4a09e12b9d4981042

SHA256
bd80f2df37d60c387090af0332813d9f93a52fb56f400068558fb47865b951a8

SHA512
b5a4ed89e9499494eb2b9e6836751c917a9668c912d60e56fd6af813af2134510d377603a7209d776e0360cc6f78e6a6d4f59d082d2dae76ebcf6b29f4f5d224

Download Submit
C:\Users\Admin\AppData\Local\Temp\Windows Loader1.exe

Filesize
375KB

MD5
88d341f3cce1b0157e3ccc8f3244d79f

SHA1
2770e38a1cf7dd53a021c1e28c605392e050a643

SHA256
90677d409448b7eab04780b4b7189770b639b723991def47a0a3ae1633f805ec

SHA512
c19de365d54afa3ed3e211740777bd9bfc3ef3ea5f45b82b0b5e4ff5436aef04f48f7b46f73fc05a1a2de604831538b5b233e2e22110b5375d0739532f9b89d6

Download Submit
C:\Users\Admin\AppData\Local\Temp\Windows Loader1.exe

Filesize
1.3MB

MD5
eb5fb9a6ec6c0fdf3d262916530d0ab0

SHA1
b7af8eea434b3e63fc40e615e9a1f2888d32480d

SHA256
17f091ab90659f66dbcc1cfee1d6ccb364fd8e872edfcc957b93240a8fb02200

SHA512
0b93077a5c01c111cfe34f72d710332b6366d261dbe221615871e76e0d0086a3898352e180dc4899bcac1d164c04936855fd43cf03deb124672b5022584e330a

Download Submit
memory/4220-67-0x0000000002E50000-0x0000000002E70000-memory.dmp

Filesize
128KB

Download
memory/4220-27-0x0000000002AB0000-0x0000000002AC2000-memory.dmp

Filesize
72KB

Download
memory/4220-43-0x0000000002E10000-0x0000000002E21000-memory.dmp

Filesize
68KB

Download
memory/4220-12-0x0000000000400000-0x0000000000623000-memory.dmp

Filesize
2.1MB

Download
memory/4220-59-0x0000000002E40000-0x0000000002E50000-memory.dmp

Filesize
64KB

Download
memory/4220-51-0x0000000002E30000-0x0000000002E40000-memory.dmp

Filesize
64KB

Download
memory/4220-35-0x0000000010000000-0x0000000010021000-memory.dmp

Filesize
132KB

Download
memory/4220-22-0x0000000002410000-0x0000000002420000-memory.dmp

Filesize
64KB

Download
memory/4220-14-0x0000000002A90000-0x0000000002AA3000-memory.dmp

Filesize
76KB

Download
memory/4220-13-0x0000000002550000-0x00000000026F3000-memory.dmp

Filesize
1.6MB

Download
memory/4220-75-0x0000000000400000-0x0000000000623000-memory.dmp

Filesize
2.1MB

Download