fa4452e8633985bc8a81893125afb876330b8e1f57613cc7d0ddb4a9d8f99dbb

General

Target

usfive_20210718-162832.exe
Size

472KB
MD5

91938ecb8df0cdc14dacfd947e451dfe
SHA1

14c44c7422b1086fb8be98601731577ff67b2909
SHA256

fa4452e8633985bc8a81893125afb876330b8e1f57613cc7d0ddb4a9d8f99dbb
SHA512

9497e5dea30c7480021e09741c67b70e32265a09d45f27aff9203bfc6803b383d1995e7a4699b5a18f9ade24b3579c6fc294f2a918b5b13d721f2b683cf38847

Score

8^/10

discovery spyware stealer

Malware Config

Signatures

Downloads MZ/PE file

Deletes itself 1 IoCs

pid	Process
288	cmd.exe

Loads dropped DLL 8 IoCs

pid	Process
1092	usfive_20210718-162832.exe
1092	usfive_20210718-162832.exe
1092	usfive_20210718-162832.exe
1092	usfive_20210718-162832.exe
1092	usfive_20210718-162832.exe
1092	usfive_20210718-162832.exe
1092	usfive_20210718-162832.exe
1092	usfive_20210718-162832.exe

Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081
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
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
400	timeout.exe

Modifies system certificate store 2 TTPs 2 IoCs

evasion spyware trojan

Install Root Certificate

T1130

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\DAC9024F54D8F6DF94935FB1732638CA6AD77C13	usfive_20210718-162832.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\DAC9024F54D8F6DF94935FB1732638CA6AD77C13\Blob = 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	usfive_20210718-162832.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1092 wrote to memory of 288	1092	usfive_20210718-162832.exe	30
PID 1092 wrote to memory of 288	1092	usfive_20210718-162832.exe	30
PID 1092 wrote to memory of 288	1092	usfive_20210718-162832.exe	30
PID 1092 wrote to memory of 288	1092	usfive_20210718-162832.exe	30
PID 288 wrote to memory of 400	288	cmd.exe	32
PID 288 wrote to memory of 400	288	cmd.exe	32
PID 288 wrote to memory of 400	288	cmd.exe	32
PID 288 wrote to memory of 400	288	cmd.exe	32

C:\Users\Admin\AppData\Local\Temp\usfive_20210718-162832.exe
"C:\Users\Admin\AppData\Local\Temp\usfive_20210718-162832.exe"
1⤵
- Loads dropped DLL
- Modifies system certificate store
- Suspicious use of WriteProcessMemory
PID:1092
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /C timeout /T 10 /NOBREAK > Nul & Del /f /q "C:\Users\Admin\AppData\Local\Temp\usfive_20210718-162832.exe"
  2⤵
  - Deletes itself
  - Suspicious use of WriteProcessMemory
  PID:288
- - C:\Windows\SysWOW64\timeout.exe
    timeout /T 10 /NOBREAK
    3⤵
    - Delays execution with timeout.exe
    PID:400

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Install Root Certificate

Modify Registry

Credential Access

Credentials in Files

2

T1081

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

2

T1005

Command and Control

Exfiltration

Impact

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Downloads

memory/1092-62-0x0000000000400000-0x00000000008E0000-memory.dmp

Filesize
4.9MB

Download
memory/1092-61-0x0000000000300000-0x0000000000393000-memory.dmp

Filesize
588KB

Download
memory/1092-60-0x0000000075AF1000-0x0000000075AF3000-memory.dmp

Filesize
8KB

Download

Analysis

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