isrstealer | b1b255b0810592adfeb0c17856548f055b5c392ea78c51c39d755670295a0e16

General

Target

7e7f39c112ce5098605bc577064c7209_JaffaCakes118.exe
Size

444KB
MD5

7e7f39c112ce5098605bc577064c7209
SHA1

0ab7663e868b19df78b98572d647d992da114800
SHA256

b1b255b0810592adfeb0c17856548f055b5c392ea78c51c39d755670295a0e16
SHA512

0c2d8bd4681ae4b088e6258a25f87e44e6905d48acf794b200bee709193d0f374c5821f9404e91888980a8e842f926d09f261f08cb3efd2bb90440e2f7d699f7
SSDEEP

12288:/og8+JXeqnm+OzEFSVkjjQzQWYQBr78kfQO:/o+JXeqFTFSVLQVCAkz

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
behavioral1/memory/2260-12-0x0000000000400000-0x0000000000452000-memory.dmp	family_isrstealer
behavioral1/memory/2260-8-0x0000000000400000-0x0000000000452000-memory.dmp	family_isrstealer
behavioral1/memory/2260-27-0x0000000000400000-0x0000000000452000-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 6 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/2320-17-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2320-19-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2320-22-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2320-21-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2320-20-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2320-26-0x0000000000400000-0x0000000000453000-memory.dmp	upx

Suspicious use of SetThreadContext 2 IoCs

Processes:

7e7f39c112ce5098605bc577064c7209_JaffaCakes118.exe7e7f39c112ce5098605bc577064c7209_JaffaCakes118.exe

description	pid	process	target process
PID 2416 set thread context of 2260	2416	7e7f39c112ce5098605bc577064c7209_JaffaCakes118.exe	7e7f39c112ce5098605bc577064c7209_JaffaCakes118.exe
PID 2260 set thread context of 2320	2260	7e7f39c112ce5098605bc577064c7209_JaffaCakes118.exe	7e7f39c112ce5098605bc577064c7209_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:

7e7f39c112ce5098605bc577064c7209_JaffaCakes118.exe7e7f39c112ce5098605bc577064c7209_JaffaCakes118.exe7e7f39c112ce5098605bc577064c7209_JaffaCakes118.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	7e7f39c112ce5098605bc577064c7209_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	7e7f39c112ce5098605bc577064c7209_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	7e7f39c112ce5098605bc577064c7209_JaffaCakes118.exe

Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

7e7f39c112ce5098605bc577064c7209_JaffaCakes118.exe7e7f39c112ce5098605bc577064c7209_JaffaCakes118.exe

pid process

2416 7e7f39c112ce5098605bc577064c7209_JaffaCakes118.exe
2260 7e7f39c112ce5098605bc577064c7209_JaffaCakes118.exe

pid	process
2416	7e7f39c112ce5098605bc577064c7209_JaffaCakes118.exe
2260	7e7f39c112ce5098605bc577064c7209_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 17 IoCs

Processes:

7e7f39c112ce5098605bc577064c7209_JaffaCakes118.exe7e7f39c112ce5098605bc577064c7209_JaffaCakes118.exe

C:\Users\Admin\AppData\Local\Temp\7e7f39c112ce5098605bc577064c7209_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\7e7f39c112ce5098605bc577064c7209_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2416
- C:\Users\Admin\AppData\Local\Temp\7e7f39c112ce5098605bc577064c7209_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\7e7f39c112ce5098605bc577064c7209_JaffaCakes118.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2260
- - C:\Users\Admin\AppData\Local\Temp\7e7f39c112ce5098605bc577064c7209_JaffaCakes118.exe
    /scomma "C:\Users\Admin\AppData\Local\Temp\tmp.ini"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2320

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

memory/2260-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2260-12-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/2260-8-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/2260-6-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/2260-5-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/2260-27-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/2320-17-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2320-19-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2320-22-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2320-21-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2320-20-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2320-26-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download

description	pid	process	target process
PID 2416 wrote to memory of 2260	2416	7e7f39c112ce5098605bc577064c7209_JaffaCakes118.exe	7e7f39c112ce5098605bc577064c7209_JaffaCakes118.exe
PID 2416 wrote to memory of 2260	2416	7e7f39c112ce5098605bc577064c7209_JaffaCakes118.exe	7e7f39c112ce5098605bc577064c7209_JaffaCakes118.exe
PID 2416 wrote to memory of 2260	2416	7e7f39c112ce5098605bc577064c7209_JaffaCakes118.exe	7e7f39c112ce5098605bc577064c7209_JaffaCakes118.exe
PID 2416 wrote to memory of 2260	2416	7e7f39c112ce5098605bc577064c7209_JaffaCakes118.exe	7e7f39c112ce5098605bc577064c7209_JaffaCakes118.exe
PID 2416 wrote to memory of 2260	2416	7e7f39c112ce5098605bc577064c7209_JaffaCakes118.exe	7e7f39c112ce5098605bc577064c7209_JaffaCakes118.exe
PID 2416 wrote to memory of 2260	2416	7e7f39c112ce5098605bc577064c7209_JaffaCakes118.exe	7e7f39c112ce5098605bc577064c7209_JaffaCakes118.exe
PID 2416 wrote to memory of 2260	2416	7e7f39c112ce5098605bc577064c7209_JaffaCakes118.exe	7e7f39c112ce5098605bc577064c7209_JaffaCakes118.exe
PID 2416 wrote to memory of 2260	2416	7e7f39c112ce5098605bc577064c7209_JaffaCakes118.exe	7e7f39c112ce5098605bc577064c7209_JaffaCakes118.exe
PID 2260 wrote to memory of 2320	2260	7e7f39c112ce5098605bc577064c7209_JaffaCakes118.exe	7e7f39c112ce5098605bc577064c7209_JaffaCakes118.exe
PID 2260 wrote to memory of 2320	2260	7e7f39c112ce5098605bc577064c7209_JaffaCakes118.exe	7e7f39c112ce5098605bc577064c7209_JaffaCakes118.exe
PID 2260 wrote to memory of 2320	2260	7e7f39c112ce5098605bc577064c7209_JaffaCakes118.exe	7e7f39c112ce5098605bc577064c7209_JaffaCakes118.exe
PID 2260 wrote to memory of 2320	2260	7e7f39c112ce5098605bc577064c7209_JaffaCakes118.exe	7e7f39c112ce5098605bc577064c7209_JaffaCakes118.exe
PID 2260 wrote to memory of 2320	2260	7e7f39c112ce5098605bc577064c7209_JaffaCakes118.exe	7e7f39c112ce5098605bc577064c7209_JaffaCakes118.exe
PID 2260 wrote to memory of 2320	2260	7e7f39c112ce5098605bc577064c7209_JaffaCakes118.exe	7e7f39c112ce5098605bc577064c7209_JaffaCakes118.exe
PID 2260 wrote to memory of 2320	2260	7e7f39c112ce5098605bc577064c7209_JaffaCakes118.exe	7e7f39c112ce5098605bc577064c7209_JaffaCakes118.exe
PID 2260 wrote to memory of 2320	2260	7e7f39c112ce5098605bc577064c7209_JaffaCakes118.exe	7e7f39c112ce5098605bc577064c7209_JaffaCakes118.exe
PID 2260 wrote to memory of 2320	2260	7e7f39c112ce5098605bc577064c7209_JaffaCakes118.exe	7e7f39c112ce5098605bc577064c7209_JaffaCakes118.exe

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads