isrstealer | 8f83df7f081c3dba8163d9d870031166de4cf3e80a1fdee8a5a8143a1e8e2c25

General

Target

e39d147853e72b8ca490eb4686ba7082_JaffaCakes118.exe
Size

252KB
MD5

e39d147853e72b8ca490eb4686ba7082
SHA1

4f7a6de52fadf4d3fdadff9a8afe27761222aca2
SHA256

8f83df7f081c3dba8163d9d870031166de4cf3e80a1fdee8a5a8143a1e8e2c25
SHA512

ccec51a463cbcd5980dac0ada18d398b73948b3456b55dd198def45b45901ae1596c8cac566edfa1c339b9bcf537500c33ab6471eb2338e94f460e6e9e789ee8
SSDEEP

3072:W+yU1aBLzCLm3yzWdpt1Mcp5BhCsxx9JECOP7+B5Nc4LnK4A9WlkgOuxPZiGZWQE:wdpt15Rxx9qQxe/9YxOExD4Q58Vh

Score

10^/10

isrstealer credential_access discovery spyware stealer trojan upx

Malware Config

Signatures

ISR Stealer
ISR Stealer is a modified version of Hackhound Stealer written in visual basic.
trojan stealer isrstealer

ISR Stealer payload 3 IoCs

Processes:

resource	yara_rule
behavioral2/memory/632-2-0x0000000000400000-0x0000000000433000-memory.dmp	family_isrstealer
behavioral2/memory/632-4-0x0000000000400000-0x0000000000433000-memory.dmp	family_isrstealer
behavioral2/memory/632-16-0x0000000000400000-0x0000000000433000-memory.dmp	family_isrstealer

Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
credential_access stealer

Credentials from Web Browsers
T1555.003
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
T1552.001

UPX packed file 5 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/1032-7-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1032-9-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1032-10-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1032-11-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1032-13-0x0000000000400000-0x0000000000453000-memory.dmp	upx

Suspicious use of SetThreadContext 2 IoCs

Processes:

e39d147853e72b8ca490eb4686ba7082_JaffaCakes118.exee39d147853e72b8ca490eb4686ba7082_JaffaCakes118.exe

description	pid	process	target process
PID 4848 set thread context of 632	4848	e39d147853e72b8ca490eb4686ba7082_JaffaCakes118.exe	e39d147853e72b8ca490eb4686ba7082_JaffaCakes118.exe
PID 632 set thread context of 1032	632	e39d147853e72b8ca490eb4686ba7082_JaffaCakes118.exe	e39d147853e72b8ca490eb4686ba7082_JaffaCakes118.exe

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

Processes:

e39d147853e72b8ca490eb4686ba7082_JaffaCakes118.exee39d147853e72b8ca490eb4686ba7082_JaffaCakes118.exee39d147853e72b8ca490eb4686ba7082_JaffaCakes118.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	e39d147853e72b8ca490eb4686ba7082_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	e39d147853e72b8ca490eb4686ba7082_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	e39d147853e72b8ca490eb4686ba7082_JaffaCakes118.exe

Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

e39d147853e72b8ca490eb4686ba7082_JaffaCakes118.exee39d147853e72b8ca490eb4686ba7082_JaffaCakes118.exe

pid process

4848 e39d147853e72b8ca490eb4686ba7082_JaffaCakes118.exe
632 e39d147853e72b8ca490eb4686ba7082_JaffaCakes118.exe

pid	process
4848	e39d147853e72b8ca490eb4686ba7082_JaffaCakes118.exe
632	e39d147853e72b8ca490eb4686ba7082_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 16 IoCs

Processes:

e39d147853e72b8ca490eb4686ba7082_JaffaCakes118.exee39d147853e72b8ca490eb4686ba7082_JaffaCakes118.exe

C:\Users\Admin\AppData\Local\Temp\e39d147853e72b8ca490eb4686ba7082_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\e39d147853e72b8ca490eb4686ba7082_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4848
- C:\Users\Admin\AppData\Local\Temp\e39d147853e72b8ca490eb4686ba7082_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\e39d147853e72b8ca490eb4686ba7082_JaffaCakes118.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:632
- - C:\Users\Admin\AppData\Local\Temp\e39d147853e72b8ca490eb4686ba7082_JaffaCakes118.exe
    /scomma "C:\Users\Admin\AppData\Local\Temp\tmp.ini"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:1032

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp.ini

Filesize
5B

MD5
d1ea279fb5559c020a1b4137dc4de237

SHA1
db6f8988af46b56216a6f0daf95ab8c9bdb57400

SHA256
fcdcc2c46896915a1c695d6231f0fee336a668531b7a3da46178c80362546dba

SHA512
720e9c284f0559015312df7fe977563e5e16f48d3506e51eb4016adf7971924d352f740b030aa3adc81b6f65fd1dba12df06d10fa6c115074e5097e7ee0f08b3

Download Submit
memory/632-2-0x0000000000400000-0x0000000000433000-memory.dmp

Filesize
204KB

Download
memory/632-4-0x0000000000400000-0x0000000000433000-memory.dmp

Filesize
204KB

Download
memory/632-16-0x0000000000400000-0x0000000000433000-memory.dmp

Filesize
204KB

Download
memory/1032-7-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1032-9-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1032-10-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1032-11-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1032-13-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download

description	pid	process	target process
PID 4848 wrote to memory of 632	4848	e39d147853e72b8ca490eb4686ba7082_JaffaCakes118.exe	e39d147853e72b8ca490eb4686ba7082_JaffaCakes118.exe
PID 4848 wrote to memory of 632	4848	e39d147853e72b8ca490eb4686ba7082_JaffaCakes118.exe	e39d147853e72b8ca490eb4686ba7082_JaffaCakes118.exe
PID 4848 wrote to memory of 632	4848	e39d147853e72b8ca490eb4686ba7082_JaffaCakes118.exe	e39d147853e72b8ca490eb4686ba7082_JaffaCakes118.exe
PID 4848 wrote to memory of 632	4848	e39d147853e72b8ca490eb4686ba7082_JaffaCakes118.exe	e39d147853e72b8ca490eb4686ba7082_JaffaCakes118.exe
PID 4848 wrote to memory of 632	4848	e39d147853e72b8ca490eb4686ba7082_JaffaCakes118.exe	e39d147853e72b8ca490eb4686ba7082_JaffaCakes118.exe
PID 4848 wrote to memory of 632	4848	e39d147853e72b8ca490eb4686ba7082_JaffaCakes118.exe	e39d147853e72b8ca490eb4686ba7082_JaffaCakes118.exe
PID 4848 wrote to memory of 632	4848	e39d147853e72b8ca490eb4686ba7082_JaffaCakes118.exe	e39d147853e72b8ca490eb4686ba7082_JaffaCakes118.exe
PID 4848 wrote to memory of 632	4848	e39d147853e72b8ca490eb4686ba7082_JaffaCakes118.exe	e39d147853e72b8ca490eb4686ba7082_JaffaCakes118.exe
PID 632 wrote to memory of 1032	632	e39d147853e72b8ca490eb4686ba7082_JaffaCakes118.exe	e39d147853e72b8ca490eb4686ba7082_JaffaCakes118.exe
PID 632 wrote to memory of 1032	632	e39d147853e72b8ca490eb4686ba7082_JaffaCakes118.exe	e39d147853e72b8ca490eb4686ba7082_JaffaCakes118.exe
PID 632 wrote to memory of 1032	632	e39d147853e72b8ca490eb4686ba7082_JaffaCakes118.exe	e39d147853e72b8ca490eb4686ba7082_JaffaCakes118.exe
PID 632 wrote to memory of 1032	632	e39d147853e72b8ca490eb4686ba7082_JaffaCakes118.exe	e39d147853e72b8ca490eb4686ba7082_JaffaCakes118.exe
PID 632 wrote to memory of 1032	632	e39d147853e72b8ca490eb4686ba7082_JaffaCakes118.exe	e39d147853e72b8ca490eb4686ba7082_JaffaCakes118.exe
PID 632 wrote to memory of 1032	632	e39d147853e72b8ca490eb4686ba7082_JaffaCakes118.exe	e39d147853e72b8ca490eb4686ba7082_JaffaCakes118.exe
PID 632 wrote to memory of 1032	632	e39d147853e72b8ca490eb4686ba7082_JaffaCakes118.exe	e39d147853e72b8ca490eb4686ba7082_JaffaCakes118.exe
PID 632 wrote to memory of 1032	632	e39d147853e72b8ca490eb4686ba7082_JaffaCakes118.exe	e39d147853e72b8ca490eb4686ba7082_JaffaCakes118.exe

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads