isrstealer | 4396dde688df17d4da491abd7de31699f4051722d25094ef5bcf353dd47aa24f

General

Target

0b78794879197dafa60f4a3080372539_JaffaCakes118.exe
Size

380KB
MD5

0b78794879197dafa60f4a3080372539
SHA1

0cc19f5284a1158e652630b7f0eacc43aa7aa7e8
SHA256

4396dde688df17d4da491abd7de31699f4051722d25094ef5bcf353dd47aa24f
SHA512

6e2cd0cd4229ef3139d2040bb5ad1666e9fcac51e22a807f3719c1d7203164da0caa8a02786f02b7a9d95c7d5f2b4803e290f71fc80b93f730ceb447484c88dc
SSDEEP

6144:HBKpuIU3tJoOIF4kTgNzfK01sDStCh0fK01sDStCh:HBKpV4KF4k0/qDwChyqDwCh

Score

10^/10

isrstealer spyware stealer trojan

Malware Config

Signatures

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

ISR Stealer payload 9 IoCs

resource	yara_rule
behavioral1/memory/3048-4-0x0000000000400000-0x0000000000417000-memory.dmp	family_isrstealer
behavioral1/memory/1412-8-0x0000000000400000-0x0000000000414000-memory.dmp	family_isrstealer
behavioral1/memory/3048-13-0x0000000000400000-0x0000000000414000-memory.dmp	family_isrstealer
behavioral1/memory/1412-14-0x0000000000400000-0x0000000000414000-memory.dmp	family_isrstealer
behavioral1/memory/3048-17-0x0000000000400000-0x0000000000417000-memory.dmp	family_isrstealer
behavioral1/memory/3048-18-0x0000000000400000-0x0000000000417000-memory.dmp	family_isrstealer
behavioral1/memory/3048-19-0x0000000000400000-0x0000000000414000-memory.dmp	family_isrstealer
behavioral1/memory/1412-20-0x0000000000400000-0x0000000000417000-memory.dmp	family_isrstealer
behavioral1/memory/1412-21-0x0000000000400000-0x0000000000414000-memory.dmp	family_isrstealer

Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001
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

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2368 set thread context of 3048	2368	0b78794879197dafa60f4a3080372539_JaffaCakes118.exe	28
PID 2368 set thread context of 1412	2368	0b78794879197dafa60f4a3080372539_JaffaCakes118.exe	29

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
1412	0b78794879197dafa60f4a3080372539_JaffaCakes118.exe
3048	0b78794879197dafa60f4a3080372539_JaffaCakes118.exe
1412	0b78794879197dafa60f4a3080372539_JaffaCakes118.exe
1412	0b78794879197dafa60f4a3080372539_JaffaCakes118.exe
1412	0b78794879197dafa60f4a3080372539_JaffaCakes118.exe
3048	0b78794879197dafa60f4a3080372539_JaffaCakes118.exe
3048	0b78794879197dafa60f4a3080372539_JaffaCakes118.exe
3048	0b78794879197dafa60f4a3080372539_JaffaCakes118.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1412	0b78794879197dafa60f4a3080372539_JaffaCakes118.exe
3048	0b78794879197dafa60f4a3080372539_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 2368 wrote to memory of 3048	2368	0b78794879197dafa60f4a3080372539_JaffaCakes118.exe	28
PID 2368 wrote to memory of 3048	2368	0b78794879197dafa60f4a3080372539_JaffaCakes118.exe	28
PID 2368 wrote to memory of 3048	2368	0b78794879197dafa60f4a3080372539_JaffaCakes118.exe	28
PID 2368 wrote to memory of 3048	2368	0b78794879197dafa60f4a3080372539_JaffaCakes118.exe	28
PID 2368 wrote to memory of 3048	2368	0b78794879197dafa60f4a3080372539_JaffaCakes118.exe	28
PID 2368 wrote to memory of 3048	2368	0b78794879197dafa60f4a3080372539_JaffaCakes118.exe	28
PID 2368 wrote to memory of 3048	2368	0b78794879197dafa60f4a3080372539_JaffaCakes118.exe	28
PID 2368 wrote to memory of 3048	2368	0b78794879197dafa60f4a3080372539_JaffaCakes118.exe	28
PID 2368 wrote to memory of 3048	2368	0b78794879197dafa60f4a3080372539_JaffaCakes118.exe	28
PID 2368 wrote to memory of 1412	2368	0b78794879197dafa60f4a3080372539_JaffaCakes118.exe	29
PID 2368 wrote to memory of 1412	2368	0b78794879197dafa60f4a3080372539_JaffaCakes118.exe	29
PID 2368 wrote to memory of 1412	2368	0b78794879197dafa60f4a3080372539_JaffaCakes118.exe	29
PID 2368 wrote to memory of 1412	2368	0b78794879197dafa60f4a3080372539_JaffaCakes118.exe	29
PID 2368 wrote to memory of 1412	2368	0b78794879197dafa60f4a3080372539_JaffaCakes118.exe	29
PID 2368 wrote to memory of 1412	2368	0b78794879197dafa60f4a3080372539_JaffaCakes118.exe	29
PID 2368 wrote to memory of 1412	2368	0b78794879197dafa60f4a3080372539_JaffaCakes118.exe	29
PID 2368 wrote to memory of 1412	2368	0b78794879197dafa60f4a3080372539_JaffaCakes118.exe	29
PID 2368 wrote to memory of 1412	2368	0b78794879197dafa60f4a3080372539_JaffaCakes118.exe	29

C:\Users\Admin\AppData\Local\Temp\0b78794879197dafa60f4a3080372539_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\0b78794879197dafa60f4a3080372539_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2368
- C:\Users\Admin\AppData\Local\Temp\0b78794879197dafa60f4a3080372539_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\0b78794879197dafa60f4a3080372539_JaffaCakes118.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of SetWindowsHookEx
  PID:3048
- C:\Users\Admin\AppData\Local\Temp\0b78794879197dafa60f4a3080372539_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\0b78794879197dafa60f4a3080372539_JaffaCakes118.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of SetWindowsHookEx
  PID:1412

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

2

T1552

Credentials In Files

2

T1552.001

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

2

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1412-8-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1412-14-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1412-20-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/1412-21-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2368-0-0x0000000000020000-0x0000000000021000-memory.dmp

Filesize
4KB

Download
memory/3048-4-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/3048-13-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3048-17-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/3048-18-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/3048-19-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download

Analysis

Sharing