af9e8f301a3677b457345921d7ee765a842eceb7df107714eaffc6193bfc6bbe

Resubmissions

12-02-2024 06:38

240212-hd166sgg25 10

12-02-2024 06:21

240212-g4tdksgd86 7

Analysis

max time kernel
121s
max time network
126s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
12-02-2024 06:38

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General

Target

linux_hive.elf
Size

2.3MB
MD5

56075e7c63b3f9f612cde6187d4a7877
SHA1

1bcfa979b7b9044ba5ce5c006bd26b0bdbeb8464
SHA256

12389b8af28307fd09fe080fd89802b4e616ed4c961f464f95fdb4b3f0aaf185
SHA512

7df68e37b3c2e7ce197f0d8736d06adf808343fe2d638bcd3e0f285968e1365c06b33157c6e5816b9fa9362e6adc262d3d2da45d3d1a38efb7e2ce980fce8b80
SSDEEP

49152:TzVcrxrb/TGvO90dL3BmAFd4A64nsfJbJ5PhTZDknzImQXNqw0Xfgg778lwQJKTS:TcbP/kB30JKT

Score

3^/10

Malware Config

Signatures

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

System Information Discovery
T1082

Modifies registry class 9 IoCs

Processes:

rundll32.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-452311807-3713411997-1028535425-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-452311807-3713411997-1028535425-1000_CLASSES\.elf	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-452311807-3713411997-1028535425-1000_CLASSES\.elf\ = "elf_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-452311807-3713411997-1028535425-1000_CLASSES\elf_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-452311807-3713411997-1028535425-1000_CLASSES\elf_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-452311807-3713411997-1028535425-1000_CLASSES\elf_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-452311807-3713411997-1028535425-1000_CLASSES\elf_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-452311807-3713411997-1028535425-1000_CLASSES\elf_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-452311807-3713411997-1028535425-1000_CLASSES\elf_auto_file\	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

AcroRd32.exe

pid process

2368 AcroRd32.exe
Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

AcroRd32.exe

pid process

2368 AcroRd32.exe
2368 AcroRd32.exe
2368 AcroRd32.exe

pid	process
2368	AcroRd32.exe

pid	process
2368	AcroRd32.exe
2368	AcroRd32.exe
2368	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

cmd.exerundll32.exe

description	pid	process	target process
PID 2228 wrote to memory of 2736	2228	cmd.exe	rundll32.exe
PID 2228 wrote to memory of 2736	2228	cmd.exe	rundll32.exe
PID 2228 wrote to memory of 2736	2228	cmd.exe	rundll32.exe
PID 2736 wrote to memory of 2368	2736	rundll32.exe	AcroRd32.exe
PID 2736 wrote to memory of 2368	2736	rundll32.exe	AcroRd32.exe
PID 2736 wrote to memory of 2368	2736	rundll32.exe	AcroRd32.exe
PID 2736 wrote to memory of 2368	2736	rundll32.exe	AcroRd32.exe

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\linux_hive.elf
1⤵
- Suspicious use of WriteProcessMemory
PID:2228

C:\Windows\system32\rundll32.exe
"C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\linux_hive.elf
2⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:2736

C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe
"C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe" "C:\Users\Admin\AppData\Local\Temp\linux_hive.elf"
3⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
PID:2368

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:\Users\Admin\AppData\Roaming\Adobe\Acrobat\9.0\SharedDataEvents
Filesize
3KB

MD5
ea8c8054dfc67f22f1e2dde1ea29b308

SHA1
9b9efec71aad4ebdee1760ab9020e62a7a825fcf

SHA256
470366b75bc5f42e52156a39768bba63514ed6e4ef019e8b3ad20bd49fef86eb

SHA512
6487cd7929dc3c1e5d202c2cf4987a26935be1f5d284c3bba512a9680918399054efdc4b5a2263c84aa55ea492e34df61f0f6a3230a7e07451d8a1c857b3e520

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