79b3c2f31ddcb742affe5aa678a6083a41952d804e185c3eb09cbff928cb7f72

Analysis

max time kernel
120s
max time network
119s
platform
windows7_x64
resource
win7-en-20211208
submitted
15/01/2022, 19:21

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General

Target
19f1cf6156dfc1b78f7aec62ffecb3be.exe
Size 1.0MB
Sample220115-x2ncjsfccp
SHA256 79b3c2f31ddcb742affe5aa678a6083a41952d804e185c3eb09cbff928cb7f72
MD5 19f1cf6156dfc1b78f7aec62ffecb3be
SHA1 472d1290df8edc671329406bcc3ddaa824fad642
SHA512 7bc44e43b11f07aba8753e17c370a1e3c78598d4f82dfd912535a35dd67cc1923cc6aa1dfd7b4f88a326cbc0fee9a485ebd39631095fcb2a0291045c10bf304d
MD5 SHA1 SHA512

Score

8^/10

discovery spyware stealer

Malware Config

Signatures

Downloads MZ/PE file

Executes dropped EXE 1 IoCs

pid	Process
1560	rundll32.exe

Loads dropped DLL 1 IoCs

pid	Process
656	RegAsm.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 612 set thread context of 656	612	19f1cf6156dfc1b78f7aec62ffecb3be.exe	27

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

System Information Discovery
T1082

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	RegAsm.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	RegAsm.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
656	RegAsm.exe
656	RegAsm.exe
656	RegAsm.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	656	RegAsm.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 612 wrote to memory of 656	612	19f1cf6156dfc1b78f7aec62ffecb3be.exe	27
PID 612 wrote to memory of 656	612	19f1cf6156dfc1b78f7aec62ffecb3be.exe	27
PID 612 wrote to memory of 656	612	19f1cf6156dfc1b78f7aec62ffecb3be.exe	27
PID 612 wrote to memory of 656	612	19f1cf6156dfc1b78f7aec62ffecb3be.exe	27
PID 612 wrote to memory of 656	612	19f1cf6156dfc1b78f7aec62ffecb3be.exe	27
PID 612 wrote to memory of 656	612	19f1cf6156dfc1b78f7aec62ffecb3be.exe	27
PID 612 wrote to memory of 656	612	19f1cf6156dfc1b78f7aec62ffecb3be.exe	27
PID 612 wrote to memory of 656	612	19f1cf6156dfc1b78f7aec62ffecb3be.exe	27
PID 612 wrote to memory of 656	612	19f1cf6156dfc1b78f7aec62ffecb3be.exe	27
PID 612 wrote to memory of 656	612	19f1cf6156dfc1b78f7aec62ffecb3be.exe	27
PID 612 wrote to memory of 656	612	19f1cf6156dfc1b78f7aec62ffecb3be.exe	27
PID 612 wrote to memory of 656	612	19f1cf6156dfc1b78f7aec62ffecb3be.exe	27
PID 656 wrote to memory of 1560	656	RegAsm.exe	29
PID 656 wrote to memory of 1560	656	RegAsm.exe	29
PID 656 wrote to memory of 1560	656	RegAsm.exe	29
PID 656 wrote to memory of 1560	656	RegAsm.exe	29
PID 656 wrote to memory of 1560	656	RegAsm.exe	29
PID 656 wrote to memory of 1560	656	RegAsm.exe	29
PID 656 wrote to memory of 1560	656	RegAsm.exe	29

C:\Users\Admin\AppData\Local\Temp\19f1cf6156dfc1b78f7aec62ffecb3be.exe
"C:\Users\Admin\AppData\Local\Temp\19f1cf6156dfc1b78f7aec62ffecb3be.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:612
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  #cmd
  2⤵
  - Loads dropped DLL
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:656
- - C:\Users\Admin\AppData\Local\Temp\rundll32.exe
    "C:\Users\Admin\AppData\Local\Temp\rundll32.exe"
    3⤵
    - Executes dropped EXE
    PID:1560

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

T1081

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

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Downloads

memory/612-54-0x0000000000390000-0x000000000049A000-memory.dmp

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memory/612-55-0x0000000000390000-0x000000000049A000-memory.dmp

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memory/612-56-0x0000000075891000-0x0000000075893000-memory.dmp

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memory/612-57-0x0000000004FE0000-0x0000000004FE1000-memory.dmp

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memory/656-62-0x0000000000400000-0x0000000000422000-memory.dmp

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memory/656-59-0x0000000000400000-0x0000000000422000-memory.dmp

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memory/656-65-0x0000000000400000-0x0000000000422000-memory.dmp

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memory/656-66-0x0000000000400000-0x0000000000422000-memory.dmp

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memory/656-67-0x0000000004BF0000-0x0000000004BF1000-memory.dmp

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memory/656-61-0x0000000000400000-0x0000000000422000-memory.dmp

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memory/656-60-0x0000000000400000-0x0000000000422000-memory.dmp

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memory/656-58-0x0000000000400000-0x0000000000422000-memory.dmp

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memory/1560-73-0x0000000000400000-0x0000000000BD4000-memory.dmp

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memory/1560-74-0x0000000000300000-0x0000000000360000-memory.dmp

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