isrstealer | 9c8771043260dbeb24da0d14000661c25ca9a30331dd6529299ae0d151c67e28

General

Target

dd6be2e0ab2b452c0bc2fcb6b94fee0c_JaffaCakes118.exe
Size

856KB
MD5

dd6be2e0ab2b452c0bc2fcb6b94fee0c
SHA1

a1e5f186f8ab455dd4f1d3a60da4f0b15796ab6d
SHA256

9c8771043260dbeb24da0d14000661c25ca9a30331dd6529299ae0d151c67e28
SHA512

15095661fb48a75edc504fc7c422205d679610d6d87a99381f27577ef38b208da156102c4900d581dc90f985e08a095d981de89e2bb896afb7c2a92ea5cf902a
SSDEEP

12288:jCybN1pc3UXbEuUINaK7VsQ7DvyNEQc8pha544sCTtH7Pyn0e0WeLDTqSwBqHui:jCyjRNaK7Vf77iEQjIDF76lneLD+5vi

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

resource	yara_rule
behavioral2/memory/5012-7-0x0000000000400000-0x0000000000435000-memory.dmp	family_isrstealer
behavioral2/memory/5012-9-0x0000000000400000-0x0000000000435000-memory.dmp	family_isrstealer
behavioral2/memory/5012-26-0x0000000000400000-0x0000000000435000-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

resource	yara_rule
behavioral2/memory/4960-14-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4960-17-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4960-18-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4960-19-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4960-23-0x0000000000400000-0x0000000000453000-memory.dmp	upx

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 3932 set thread context of 5012	3932	dd6be2e0ab2b452c0bc2fcb6b94fee0c_JaffaCakes118.exe	84
PID 5012 set thread context of 4960	5012	dd6be2e0ab2b452c0bc2fcb6b94fee0c_JaffaCakes118.exe	85

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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	dd6be2e0ab2b452c0bc2fcb6b94fee0c_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	dd6be2e0ab2b452c0bc2fcb6b94fee0c_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	dd6be2e0ab2b452c0bc2fcb6b94fee0c_JaffaCakes118.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
3932	dd6be2e0ab2b452c0bc2fcb6b94fee0c_JaffaCakes118.exe
3932	dd6be2e0ab2b452c0bc2fcb6b94fee0c_JaffaCakes118.exe
5012	dd6be2e0ab2b452c0bc2fcb6b94fee0c_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 3932 wrote to memory of 5012	3932	dd6be2e0ab2b452c0bc2fcb6b94fee0c_JaffaCakes118.exe	84
PID 3932 wrote to memory of 5012	3932	dd6be2e0ab2b452c0bc2fcb6b94fee0c_JaffaCakes118.exe	84
PID 3932 wrote to memory of 5012	3932	dd6be2e0ab2b452c0bc2fcb6b94fee0c_JaffaCakes118.exe	84
PID 3932 wrote to memory of 5012	3932	dd6be2e0ab2b452c0bc2fcb6b94fee0c_JaffaCakes118.exe	84
PID 3932 wrote to memory of 5012	3932	dd6be2e0ab2b452c0bc2fcb6b94fee0c_JaffaCakes118.exe	84
PID 3932 wrote to memory of 5012	3932	dd6be2e0ab2b452c0bc2fcb6b94fee0c_JaffaCakes118.exe	84
PID 3932 wrote to memory of 5012	3932	dd6be2e0ab2b452c0bc2fcb6b94fee0c_JaffaCakes118.exe	84
PID 3932 wrote to memory of 5012	3932	dd6be2e0ab2b452c0bc2fcb6b94fee0c_JaffaCakes118.exe	84
PID 5012 wrote to memory of 4960	5012	dd6be2e0ab2b452c0bc2fcb6b94fee0c_JaffaCakes118.exe	85
PID 5012 wrote to memory of 4960	5012	dd6be2e0ab2b452c0bc2fcb6b94fee0c_JaffaCakes118.exe	85
PID 5012 wrote to memory of 4960	5012	dd6be2e0ab2b452c0bc2fcb6b94fee0c_JaffaCakes118.exe	85
PID 5012 wrote to memory of 4960	5012	dd6be2e0ab2b452c0bc2fcb6b94fee0c_JaffaCakes118.exe	85
PID 5012 wrote to memory of 4960	5012	dd6be2e0ab2b452c0bc2fcb6b94fee0c_JaffaCakes118.exe	85
PID 5012 wrote to memory of 4960	5012	dd6be2e0ab2b452c0bc2fcb6b94fee0c_JaffaCakes118.exe	85
PID 5012 wrote to memory of 4960	5012	dd6be2e0ab2b452c0bc2fcb6b94fee0c_JaffaCakes118.exe	85
PID 5012 wrote to memory of 4960	5012	dd6be2e0ab2b452c0bc2fcb6b94fee0c_JaffaCakes118.exe	85

C:\Users\Admin\AppData\Local\Temp\dd6be2e0ab2b452c0bc2fcb6b94fee0c_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\dd6be2e0ab2b452c0bc2fcb6b94fee0c_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3932
- C:\Users\Admin\AppData\Local\Temp\dd6be2e0ab2b452c0bc2fcb6b94fee0c_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\dd6be2e0ab2b452c0bc2fcb6b94fee0c_JaffaCakes118.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:5012
- - C:\Users\Admin\AppData\Local\Temp\dd6be2e0ab2b452c0bc2fcb6b94fee0c_JaffaCakes118.exe
    /scomma "C:\Users\Admin\AppData\Local\Temp\uTc6d6fV5w.ini"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:4960

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\uTc6d6fV5w.ini

Filesize
5B

MD5
d1ea279fb5559c020a1b4137dc4de237

SHA1
db6f8988af46b56216a6f0daf95ab8c9bdb57400

SHA256
fcdcc2c46896915a1c695d6231f0fee336a668531b7a3da46178c80362546dba

SHA512
720e9c284f0559015312df7fe977563e5e16f48d3506e51eb4016adf7971924d352f740b030aa3adc81b6f65fd1dba12df06d10fa6c115074e5097e7ee0f08b3

Download Submit
memory/3932-13-0x0000000000400000-0x00000000007B8000-memory.dmp

Filesize
3.7MB

Download
memory/3932-3-0x0000000000400000-0x00000000007B8000-memory.dmp

Filesize
3.7MB

Download
memory/3932-2-0x0000000000400000-0x00000000007B8000-memory.dmp

Filesize
3.7MB

Download
memory/3932-0-0x0000000000400000-0x00000000007B8000-memory.dmp

Filesize
3.7MB

Download
memory/4960-19-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4960-14-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4960-17-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4960-18-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4960-23-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/5012-9-0x0000000000400000-0x0000000000435000-memory.dmp

Filesize
212KB

Download
memory/5012-7-0x0000000000400000-0x0000000000435000-memory.dmp

Filesize
212KB

Download
memory/5012-26-0x0000000000400000-0x0000000000435000-memory.dmp

Filesize
212KB

Download

Analysis

Sharing