e30be1fa4f2fae7b89c891a3fc20099bb58c477fc2e7d4d330e314afe9d274fe

Analysis

max time kernel
141s
max time network
126s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
04/02/2024, 14:47

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General

Target

VirusShare_b0eac46978507264e9c7dddb2722636e.exe
Size

499KB
MD5

b0eac46978507264e9c7dddb2722636e
SHA1

6a4f90ad0384f1eedf4cc404294d3e5b05ca7259
SHA256

e30be1fa4f2fae7b89c891a3fc20099bb58c477fc2e7d4d330e314afe9d274fe
SHA512

546c9fa82e7bb6e3a160dd0bd0c63080037cd5e47ce4ec9a80078e82d8392a947e70dc8a4275abde3ef2c19f00458897b0d7acfac202944f61e9b89d2c93a665
SSDEEP

12288:cwCHlw3CFsyvCzOMMnMMMMMdVZZHL1biHxy0lkDrmKFRAqrI:cwCF0CFs4YOMMnMMMMMdFL1B/9F

Score

9^/10

evasion persistence upx

Malware Config

Signatures

UPX dump on OEP (original entry point) 1 IoCs

resource	yara_rule
behavioral1/memory/2636-2-0x0000000000600000-0x000000000075A000-memory.dmp	UPX

Disables Task Manager via registry modification
evasion

Executes dropped EXE 1 IoCs

pid	Process
2464	KMsAsKYhhcwX.exe

Loads dropped DLL 1 IoCs

pid	Process
2636	VirusShare_b0eac46978507264e9c7dddb2722636e.exe

UPX packed file 1 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2636-2-0x0000000000600000-0x000000000075A000-memory.dmp	upx

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1603059206-2004189698-4139800220-1000\Software\Microsoft\Windows\CurrentVersion\Run\KMsAsKYhhcwX = "C:\\ProgramData\\KMsAsKYhhcwX.exe"	VirusShare_b0eac46978507264e9c7dddb2722636e.exe

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

System Information Discovery
T1082

Modifies Internet Explorer settings 1 TTPs 2 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1603059206-2004189698-4139800220-1000\Software\Microsoft\Internet Explorer\Download	VirusShare_b0eac46978507264e9c7dddb2722636e.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1603059206-2004189698-4139800220-1000\Software\Microsoft\Internet Explorer\Download\CheckExeSignatures = "no"	VirusShare_b0eac46978507264e9c7dddb2722636e.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2636	VirusShare_b0eac46978507264e9c7dddb2722636e.exe
2636	VirusShare_b0eac46978507264e9c7dddb2722636e.exe
2464	KMsAsKYhhcwX.exe
2464	KMsAsKYhhcwX.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
2636	VirusShare_b0eac46978507264e9c7dddb2722636e.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2636 wrote to memory of 2464	2636	VirusShare_b0eac46978507264e9c7dddb2722636e.exe	28
PID 2636 wrote to memory of 2464	2636	VirusShare_b0eac46978507264e9c7dddb2722636e.exe	28
PID 2636 wrote to memory of 2464	2636	VirusShare_b0eac46978507264e9c7dddb2722636e.exe	28
PID 2636 wrote to memory of 2464	2636	VirusShare_b0eac46978507264e9c7dddb2722636e.exe	28

System policy modification 1 TTPs 2 IoCs

evasion

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System	VirusShare_b0eac46978507264e9c7dddb2722636e.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\DisableTaskMgr = "1"	VirusShare_b0eac46978507264e9c7dddb2722636e.exe

C:\Users\Admin\AppData\Local\Temp\VirusShare_b0eac46978507264e9c7dddb2722636e.exe
"C:\Users\Admin\AppData\Local\Temp\VirusShare_b0eac46978507264e9c7dddb2722636e.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- Modifies Internet Explorer settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: RenamesItself
- Suspicious use of WriteProcessMemory
- System policy modification
PID:2636
- C:\ProgramData\KMsAsKYhhcwX.exe
  "C:\ProgramData\KMsAsKYhhcwX.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  PID:2464

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\ProgramData\KMsAsKYhhcwX.exe

Filesize
499KB

MD5
b0eac46978507264e9c7dddb2722636e

SHA1
6a4f90ad0384f1eedf4cc404294d3e5b05ca7259

SHA256
e30be1fa4f2fae7b89c891a3fc20099bb58c477fc2e7d4d330e314afe9d274fe

SHA512
546c9fa82e7bb6e3a160dd0bd0c63080037cd5e47ce4ec9a80078e82d8392a947e70dc8a4275abde3ef2c19f00458897b0d7acfac202944f61e9b89d2c93a665

Download Submit
memory/2636-1-0x0000000001EE0000-0x0000000002070000-memory.dmp

Filesize
1.6MB

Download
memory/2636-2-0x0000000000600000-0x000000000075A000-memory.dmp

Filesize
1.4MB

Download