isrstealer | 3684a9fad5d69287ec4057b8d3ede2963b1a1a3b942c7581aa5fdb2a1bd52dcd

General

Target

93320a0361b12c7ecb0591b2bea5d04f_JaffaCakes118.exe
Size

252KB
MD5

93320a0361b12c7ecb0591b2bea5d04f
SHA1

73b4b722249150a5cfb2d0318699eddb7a8f4224
SHA256

3684a9fad5d69287ec4057b8d3ede2963b1a1a3b942c7581aa5fdb2a1bd52dcd
SHA512

ae674722113579c89e0743618001483751bdf22a2f676981d7bee34f2e67497568a9b7b70149d62482ed4b89949e520846295ca5ad55a08b12b1e06707077f85
SSDEEP

6144:vdOWSzH3MFiIN/rf+/4pWZjt6bhQ5srplZ55:vxSzH8UINjpWZjt6m8pn

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 2 IoCs

resource	yara_rule
behavioral1/memory/320-2-0x0000000000400000-0x0000000000432000-memory.dmp	family_isrstealer
behavioral1/memory/320-17-0x0000000000400000-0x0000000000432000-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

resource	yara_rule
behavioral1/memory/2664-7-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2664-11-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2664-10-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2664-9-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2664-12-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2664-16-0x0000000000400000-0x0000000000453000-memory.dmp	upx

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2708 set thread context of 320	2708	93320a0361b12c7ecb0591b2bea5d04f_JaffaCakes118.exe	30
PID 320 set thread context of 2664	320	93320a0361b12c7ecb0591b2bea5d04f_JaffaCakes118.exe	31

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	93320a0361b12c7ecb0591b2bea5d04f_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	93320a0361b12c7ecb0591b2bea5d04f_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	93320a0361b12c7ecb0591b2bea5d04f_JaffaCakes118.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2708	93320a0361b12c7ecb0591b2bea5d04f_JaffaCakes118.exe
320	93320a0361b12c7ecb0591b2bea5d04f_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 2708 wrote to memory of 320	2708	93320a0361b12c7ecb0591b2bea5d04f_JaffaCakes118.exe	30
PID 2708 wrote to memory of 320	2708	93320a0361b12c7ecb0591b2bea5d04f_JaffaCakes118.exe	30
PID 2708 wrote to memory of 320	2708	93320a0361b12c7ecb0591b2bea5d04f_JaffaCakes118.exe	30
PID 2708 wrote to memory of 320	2708	93320a0361b12c7ecb0591b2bea5d04f_JaffaCakes118.exe	30
PID 2708 wrote to memory of 320	2708	93320a0361b12c7ecb0591b2bea5d04f_JaffaCakes118.exe	30
PID 2708 wrote to memory of 320	2708	93320a0361b12c7ecb0591b2bea5d04f_JaffaCakes118.exe	30
PID 2708 wrote to memory of 320	2708	93320a0361b12c7ecb0591b2bea5d04f_JaffaCakes118.exe	30
PID 2708 wrote to memory of 320	2708	93320a0361b12c7ecb0591b2bea5d04f_JaffaCakes118.exe	30
PID 2708 wrote to memory of 320	2708	93320a0361b12c7ecb0591b2bea5d04f_JaffaCakes118.exe	30
PID 320 wrote to memory of 2664	320	93320a0361b12c7ecb0591b2bea5d04f_JaffaCakes118.exe	31
PID 320 wrote to memory of 2664	320	93320a0361b12c7ecb0591b2bea5d04f_JaffaCakes118.exe	31
PID 320 wrote to memory of 2664	320	93320a0361b12c7ecb0591b2bea5d04f_JaffaCakes118.exe	31
PID 320 wrote to memory of 2664	320	93320a0361b12c7ecb0591b2bea5d04f_JaffaCakes118.exe	31
PID 320 wrote to memory of 2664	320	93320a0361b12c7ecb0591b2bea5d04f_JaffaCakes118.exe	31
PID 320 wrote to memory of 2664	320	93320a0361b12c7ecb0591b2bea5d04f_JaffaCakes118.exe	31
PID 320 wrote to memory of 2664	320	93320a0361b12c7ecb0591b2bea5d04f_JaffaCakes118.exe	31
PID 320 wrote to memory of 2664	320	93320a0361b12c7ecb0591b2bea5d04f_JaffaCakes118.exe	31
PID 320 wrote to memory of 2664	320	93320a0361b12c7ecb0591b2bea5d04f_JaffaCakes118.exe	31

C:\Users\Admin\AppData\Local\Temp\93320a0361b12c7ecb0591b2bea5d04f_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\93320a0361b12c7ecb0591b2bea5d04f_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2708
- C:\Users\Admin\AppData\Local\Temp\93320a0361b12c7ecb0591b2bea5d04f_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\93320a0361b12c7ecb0591b2bea5d04f_JaffaCakes118.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:320
- - C:\Users\Admin\AppData\Local\Temp\93320a0361b12c7ecb0591b2bea5d04f_JaffaCakes118.exe
    /scomma "C:\Users\Admin\AppData\Local\Temp\tmp.ini"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2664

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

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Downloads

memory/320-2-0x0000000000400000-0x0000000000432000-memory.dmp

Filesize
200KB

Download
memory/320-17-0x0000000000400000-0x0000000000432000-memory.dmp

Filesize
200KB

Download
memory/2664-7-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2664-11-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2664-10-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2664-9-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2664-12-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2664-16-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download

Analysis

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