8a33cc7af2cf926411f45236cb841d1b5ab667aabff7c85c102a0edb2baa2534

Analysis

max time kernel
122s
max time network
127s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
07-07-2024 03:18

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General

Target

Ruler.IRule.pdb
Size

14KB
MD5

d84b377723309d096f03bd74dfe0d031
SHA1

db5087ca8b2767764fa2b14960e58893f4abce84
SHA256

61c0f79b5406b148896c26b13082502ed2aad9d338ad39f6fa5c8bca77b2c290
SHA512

b2726ad03470b192a6b53056a5ae5b54f50ea2c829b84c12abc16332677c4253d8a0d2431975afd159e66e08983c7fdfe06f238db115aea38c40186f690b73a9
SSDEEP

384:wlP+16GnaaZl/zxXkmGPcV3WkHXf+PA7enEUnayf8Oqlql9:4q/92PP9

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-1-5-21-2212144002-1172735686-1556890956-1000_CLASSES\.pdb	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2212144002-1172735686-1556890956-1000_CLASSES\.pdb\ = "pdb_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2212144002-1172735686-1556890956-1000_CLASSES\pdb_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2212144002-1172735686-1556890956-1000_CLASSES\pdb_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2212144002-1172735686-1556890956-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2212144002-1172735686-1556890956-1000_CLASSES\pdb_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2212144002-1172735686-1556890956-1000_CLASSES\pdb_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2212144002-1172735686-1556890956-1000_CLASSES\pdb_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2212144002-1172735686-1556890956-1000_CLASSES\pdb_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

AcroRd32.exe

pid process

2224 AcroRd32.exe
Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

AcroRd32.exe

pid process

2224 AcroRd32.exe
2224 AcroRd32.exe

pid	process
2224	AcroRd32.exe

pid	process
2224	AcroRd32.exe
2224	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

cmd.exerundll32.exe

description	pid	process	target process
PID 2120 wrote to memory of 2728	2120	cmd.exe	rundll32.exe
PID 2120 wrote to memory of 2728	2120	cmd.exe	rundll32.exe
PID 2120 wrote to memory of 2728	2120	cmd.exe	rundll32.exe
PID 2728 wrote to memory of 2224	2728	rundll32.exe	AcroRd32.exe
PID 2728 wrote to memory of 2224	2728	rundll32.exe	AcroRd32.exe
PID 2728 wrote to memory of 2224	2728	rundll32.exe	AcroRd32.exe
PID 2728 wrote to memory of 2224	2728	rundll32.exe	AcroRd32.exe

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\Ruler.IRule.pdb
1⤵
- Suspicious use of WriteProcessMemory
PID:2120

C:\Windows\system32\rundll32.exe
"C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\Ruler.IRule.pdb
2⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:2728

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\Ruler.IRule.pdb"
3⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
PID:2224

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

Replay Monitor

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Downloads

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

Filesize
3KB

MD5
e9fd285b3efd90c4feed46397637b313

SHA1
a19fc3124a2c7f06045d2d0b02e1c01aa44a3e98

SHA256
cbc7c13b8f628555db607e8e310dfb541ab78878f6b894b44d747010b105a33b

SHA512
7338382909ed63c9a5d6580fdd0d2b98ba5eb688135f13c13e193a92ddff90b8d340b486103e5380f487f8e1db92a1ae6976acc6565530cfd27f1435a9e0d0a3

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