isrstealer | 1ddf8a153a5b8714ea046590303f1297c6f3cf02ff43b183c932f81de23f2704

General

Target

f43d4610e84b7c370096eef673d6f408_JaffaCakes118.exe
Size

224KB
MD5

f43d4610e84b7c370096eef673d6f408
SHA1

2703a47ada67df6398453be08ca09738a7ce53fd
SHA256

1ddf8a153a5b8714ea046590303f1297c6f3cf02ff43b183c932f81de23f2704
SHA512

870e7e900c3507db2203dab3737d11c69584a2578040a104d00daf1a98baf437f5dfb0a72d5014b2174d20a128bc01e525ca09c5f8e0eaec9ff68857b9a9bad0
SSDEEP

3072:2pR7bg14YQtdOozHiIkVGw4rPlXv4hpBbi9R7urAcP7ruXg:2Tbg1DQtdjHyKZ4hO9BurAcF

Score

10^/10

isrstealer discovery 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 6 IoCs

resource	yara_rule
behavioral1/memory/1968-44-0x0000000000400000-0x0000000000590000-memory.dmp	family_isrstealer
behavioral1/memory/1968-38-0x0000000000400000-0x0000000000590000-memory.dmp	family_isrstealer
behavioral1/memory/1968-48-0x0000000000400000-0x0000000000414000-memory.dmp	family_isrstealer
behavioral1/memory/1968-49-0x0000000000400000-0x0000000000590000-memory.dmp	family_isrstealer
behavioral1/memory/1968-50-0x0000000000400000-0x0000000000590000-memory.dmp	family_isrstealer
behavioral1/memory/1968-51-0x0000000000400000-0x0000000000414000-memory.dmp	family_isrstealer

Isrstealer 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 3 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

Credentials from Web Browsers
T1555.003
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 2 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	f43d4610e84b7c370096eef673d6f408_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f43d4610e84b7c370096eef673d6f408_JaffaCakes118.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1968	f43d4610e84b7c370096eef673d6f408_JaffaCakes118.exe
1968	f43d4610e84b7c370096eef673d6f408_JaffaCakes118.exe
1968	f43d4610e84b7c370096eef673d6f408_JaffaCakes118.exe
1968	f43d4610e84b7c370096eef673d6f408_JaffaCakes118.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1384	f43d4610e84b7c370096eef673d6f408_JaffaCakes118.exe
1968	f43d4610e84b7c370096eef673d6f408_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1384 wrote to memory of 1968	1384	f43d4610e84b7c370096eef673d6f408_JaffaCakes118.exe	31
PID 1384 wrote to memory of 1968	1384	f43d4610e84b7c370096eef673d6f408_JaffaCakes118.exe	31
PID 1384 wrote to memory of 1968	1384	f43d4610e84b7c370096eef673d6f408_JaffaCakes118.exe	31
PID 1384 wrote to memory of 1968	1384	f43d4610e84b7c370096eef673d6f408_JaffaCakes118.exe	31
PID 1384 wrote to memory of 1968	1384	f43d4610e84b7c370096eef673d6f408_JaffaCakes118.exe	31
PID 1384 wrote to memory of 1968	1384	f43d4610e84b7c370096eef673d6f408_JaffaCakes118.exe	31
PID 1384 wrote to memory of 1968	1384	f43d4610e84b7c370096eef673d6f408_JaffaCakes118.exe	31
PID 1384 wrote to memory of 1968	1384	f43d4610e84b7c370096eef673d6f408_JaffaCakes118.exe	31

C:\Users\Admin\AppData\Local\Temp\f43d4610e84b7c370096eef673d6f408_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f43d4610e84b7c370096eef673d6f408_JaffaCakes118.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1384
- C:\Users\Admin\AppData\Local\Temp\f43d4610e84b7c370096eef673d6f408_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\f43d4610e84b7c370096eef673d6f408_JaffaCakes118.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of SetWindowsHookEx
  PID:1968

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

2

T1552

Credentials In Files

2

T1552.001

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

2

T1005

Command and Control

Exfiltration

Impact

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Downloads

memory/1968-24-0x0000000000400000-0x0000000000590000-memory.dmp

Filesize
1.6MB

Download
memory/1968-14-0x0000000000400000-0x0000000000590000-memory.dmp

Filesize
1.6MB

Download
memory/1968-44-0x0000000000400000-0x0000000000590000-memory.dmp

Filesize
1.6MB

Download
memory/1968-38-0x0000000000400000-0x0000000000590000-memory.dmp

Filesize
1.6MB

Download
memory/1968-48-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1968-49-0x0000000000400000-0x0000000000590000-memory.dmp

Filesize
1.6MB

Download
memory/1968-50-0x0000000000400000-0x0000000000590000-memory.dmp

Filesize
1.6MB

Download
memory/1968-51-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download

Analysis

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