565e3abc2f08e6231bb981c366fccfe42796b6ff530bdc66d1aaa5f7e23b05f0

Analysis

max time kernel
152s
max time network
128s
platform
windows7_x64
resource
win7-20231025-en
resource tags

arch:x64arch:x86image:win7-20231025-enlocale:en-usos:windows7-x64system
submitted
11/11/2023, 22:22

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General

Target

Expensive-2.0/natives/OpenAL32.dll.sha1
Size

42B
MD5

6eef8babb8dd2c3ab1940937aa387ad6
SHA1

4ef1b45ff9e0875820c3095f03c2b081e20911f8
SHA256

13c3437d5de6aaf18f3a0e16a6f552ee7ec128c5e4bcc45986f92e9dc8796acb
SHA512

77e7b0a3565d2b372456400d20784caca4d47a5031a75359a4b003f4a1c9b56d9cbdae730014a5014192a0f27720c7e54ba4d5adb1b9797d8cd623f2d03850d9

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-1-5-21-1861898231-3446828954-4278112889-1000_CLASSES\sha1_auto_file	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1861898231-3446828954-4278112889-1000_CLASSES\sha1_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1861898231-3446828954-4278112889-1000_CLASSES\sha1_auto_file\shell\Read\command	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1861898231-3446828954-4278112889-1000_Classes\Local Settings	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1861898231-3446828954-4278112889-1000_CLASSES\sha1_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1861898231-3446828954-4278112889-1000_CLASSES\.sha1	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1861898231-3446828954-4278112889-1000_CLASSES\.sha1\ = "sha1_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1861898231-3446828954-4278112889-1000_CLASSES\sha1_auto_file\shell\Read	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1861898231-3446828954-4278112889-1000_CLASSES\sha1_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2672	AcroRd32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
2672	AcroRd32.exe
2672	AcroRd32.exe
2672	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2220 wrote to memory of 2624	2220	cmd.exe	29
PID 2220 wrote to memory of 2624	2220	cmd.exe	29
PID 2220 wrote to memory of 2624	2220	cmd.exe	29
PID 2624 wrote to memory of 2672	2624	rundll32.exe	30
PID 2624 wrote to memory of 2672	2624	rundll32.exe	30
PID 2624 wrote to memory of 2672	2624	rundll32.exe	30
PID 2624 wrote to memory of 2672	2624	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\Expensive-2.0\natives\OpenAL32.dll.sha1
1⤵
- Suspicious use of WriteProcessMemory
PID:2220
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\Expensive-2.0\natives\OpenAL32.dll.sha1
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2624
- - 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\Expensive-2.0\natives\OpenAL32.dll.sha1"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2672

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

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Downloads

C:\Users\Admin\AppData\Roaming\Adobe\Acrobat\9.0\SharedDataEvents

Filesize
3KB

MD5
d6524fd07b22c0e2ccb737005428f413

SHA1
cbdc810a4eb48b637b0b1c33a50485ddc8068fdf

SHA256
cd0f5724e5de8116ef5e1f8f5dbf323861d30469354adccf23bf3aa9ca2ab55b

SHA512
6b33d0d89757599e2680df9455e2753187da08a23221dded1c9136018b5784d4d6d7b84600d41b43ddb4309f3efd6d4a37ae4d1ab93befb1f312b80823279141

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