da24966b2d4057afc7c0a4910ad0c37c360573866037712cd488b696244e1a20

Resubmissions

08/07/2023, 07:03

230708-hvrdasea2w 3

08/07/2023, 07:01

230708-htqqdada27 1

Analysis

max time kernel
128s
max time network
32s
platform
windows7_x64
resource
win7-20230703-en
resource tags

arch:x64arch:x86image:win7-20230703-enlocale:en-usos:windows7-x64system
submitted
08/07/2023, 07:03

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General

Target

sample.tar
Size

118.5MB
MD5

dd6b91364c768fb695d050af838cfd66
SHA1

2b01a57d8ab145a8ce550c788c47791c2c42d8ed
SHA256

34bab9b7405b9a6cb891218c72b4b22cc74521436d96a57e4dd9b5c26daf5cf3
SHA512

60ac64d19f8466ee02ce19b0a95382ad8f82b3a480b43518bb79df05787eee2d283247e483f5d215d1cb20fde07f09bde8b10528e196972ab87119d45db214e1
SSDEEP

1572864:EFlPNePr10q1vo8T5SnMp8dRlfC3KsRfOswBgFNBmy2yyq32M8l7uBfjG6d4B6cP:OQR0q1l5SnMuRlq3K8PbBmy2yCM8ssV

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

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1724861073-2584418204-2594431177-1000_CLASSES\tar_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1724861073-2584418204-2594431177-1000_CLASSES\tar_auto_file\	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1724861073-2584418204-2594431177-1000_CLASSES\.tar\ = "tar_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1724861073-2584418204-2594431177-1000_CLASSES\tar_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1724861073-2584418204-2594431177-1000_CLASSES\tar_auto_file\shell	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1724861073-2584418204-2594431177-1000_CLASSES\tar_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1724861073-2584418204-2594431177-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1724861073-2584418204-2594431177-1000_CLASSES\.tar	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1724861073-2584418204-2594431177-1000_CLASSES\tar_auto_file\shell\Read\command	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3044	AcroRd32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
3044	AcroRd32.exe
3044	AcroRd32.exe
3044	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2424 wrote to memory of 2448	2424	cmd.exe	29
PID 2424 wrote to memory of 2448	2424	cmd.exe	29
PID 2424 wrote to memory of 2448	2424	cmd.exe	29
PID 2448 wrote to memory of 3044	2448	rundll32.exe	30
PID 2448 wrote to memory of 3044	2448	rundll32.exe	30
PID 2448 wrote to memory of 3044	2448	rundll32.exe	30
PID 2448 wrote to memory of 3044	2448	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\sample.tar
1⤵
- Suspicious use of WriteProcessMemory
PID:2424
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\sample.tar
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2448
- - 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\sample.tar"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:3044

Network

MITRE ATT&CK Enterprise v6

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
8ecb6499422425431fa07b710891392b

SHA1
599b37085a072a15927831daea059c2472cd5781

SHA256
3dcde4ea86a30028208003c540a0fc76a41a609a855e45d110653d9e50a0e544

SHA512
9683681bdf84e75ef0d38aad0345741591dbc131f252724cc7446cb8c70a23e5539de30ebfc80e0c824e883023a77105aad3903cf191f50d2e1a5037e42b6147

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