isrstealer | 22d26657b04833d870e70a9c23980595771a6cff35fa59f984809ffdfd77a0d0

General

Target

e67bc886e8798b8be7e70ef019905f1e_JaffaCakes118.exe
Size

236KB
MD5

e67bc886e8798b8be7e70ef019905f1e
SHA1

3b06c51faf0f481ba8ddbb1310b498e91137f914
SHA256

22d26657b04833d870e70a9c23980595771a6cff35fa59f984809ffdfd77a0d0
SHA512

5eefceeb6cb1dc4745e8bbb3641a3222011440bdf471ec63001a5a2688b0098276ee2c8d87da085650e5bf42efed23ec45867f0960d973022238b8b393fce92c
SSDEEP

6144:qnBp3Xn2fG39j/N2UtcyiHbdCmqorFJnSSUl:6p139P07PXrzSSUl

Score

10^/10

isrstealer bootkit discovery persistence 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 3 IoCs

Processes:

resource	yara_rule
behavioral1/memory/348-21-0x0000000000400000-0x0000000000414000-memory.dmp	family_isrstealer
behavioral1/memory/348-31-0x0000000000400000-0x0000000000414000-memory.dmp	family_isrstealer
behavioral1/memory/348-34-0x0000000000400000-0x0000000000414000-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

Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

Bootkits write to the MBR to gain persistence at a level below the operating system.

bootkit persistence

Bootkit

T1542.003

Processes:

e67bc886e8798b8be7e70ef019905f1e_JaffaCakes118.exe

description	ioc	Process
File opened for modification	\??\PhysicalDrive0	e67bc886e8798b8be7e70ef019905f1e_JaffaCakes118.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

e67bc886e8798b8be7e70ef019905f1e_JaffaCakes118.exee67bc886e8798b8be7e70ef019905f1e_JaffaCakes118.exe

description	pid	Process	procid_target
PID 2180 set thread context of 2168	2180	e67bc886e8798b8be7e70ef019905f1e_JaffaCakes118.exe	31
PID 2168 set thread context of 348	2168	e67bc886e8798b8be7e70ef019905f1e_JaffaCakes118.exe	32

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 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:

e67bc886e8798b8be7e70ef019905f1e_JaffaCakes118.exee67bc886e8798b8be7e70ef019905f1e_JaffaCakes118.exee67bc886e8798b8be7e70ef019905f1e_JaffaCakes118.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	e67bc886e8798b8be7e70ef019905f1e_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	e67bc886e8798b8be7e70ef019905f1e_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	e67bc886e8798b8be7e70ef019905f1e_JaffaCakes118.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

e67bc886e8798b8be7e70ef019905f1e_JaffaCakes118.exe

pid	Process
348	e67bc886e8798b8be7e70ef019905f1e_JaffaCakes118.exe
348	e67bc886e8798b8be7e70ef019905f1e_JaffaCakes118.exe
348	e67bc886e8798b8be7e70ef019905f1e_JaffaCakes118.exe
348	e67bc886e8798b8be7e70ef019905f1e_JaffaCakes118.exe

Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

e67bc886e8798b8be7e70ef019905f1e_JaffaCakes118.exee67bc886e8798b8be7e70ef019905f1e_JaffaCakes118.exee67bc886e8798b8be7e70ef019905f1e_JaffaCakes118.exe

pid	Process
2180	e67bc886e8798b8be7e70ef019905f1e_JaffaCakes118.exe
2168	e67bc886e8798b8be7e70ef019905f1e_JaffaCakes118.exe
348	e67bc886e8798b8be7e70ef019905f1e_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 17 IoCs

Processes:

e67bc886e8798b8be7e70ef019905f1e_JaffaCakes118.exee67bc886e8798b8be7e70ef019905f1e_JaffaCakes118.exe

description	pid	Process	procid_target
PID 2180 wrote to memory of 2168	2180	e67bc886e8798b8be7e70ef019905f1e_JaffaCakes118.exe	31
PID 2180 wrote to memory of 2168	2180	e67bc886e8798b8be7e70ef019905f1e_JaffaCakes118.exe	31
PID 2180 wrote to memory of 2168	2180	e67bc886e8798b8be7e70ef019905f1e_JaffaCakes118.exe	31
PID 2180 wrote to memory of 2168	2180	e67bc886e8798b8be7e70ef019905f1e_JaffaCakes118.exe	31
PID 2180 wrote to memory of 2168	2180	e67bc886e8798b8be7e70ef019905f1e_JaffaCakes118.exe	31
PID 2180 wrote to memory of 2168	2180	e67bc886e8798b8be7e70ef019905f1e_JaffaCakes118.exe	31
PID 2180 wrote to memory of 2168	2180	e67bc886e8798b8be7e70ef019905f1e_JaffaCakes118.exe	31
PID 2180 wrote to memory of 2168	2180	e67bc886e8798b8be7e70ef019905f1e_JaffaCakes118.exe	31
PID 2180 wrote to memory of 2168	2180	e67bc886e8798b8be7e70ef019905f1e_JaffaCakes118.exe	31
PID 2168 wrote to memory of 348	2168	e67bc886e8798b8be7e70ef019905f1e_JaffaCakes118.exe	32
PID 2168 wrote to memory of 348	2168	e67bc886e8798b8be7e70ef019905f1e_JaffaCakes118.exe	32
PID 2168 wrote to memory of 348	2168	e67bc886e8798b8be7e70ef019905f1e_JaffaCakes118.exe	32
PID 2168 wrote to memory of 348	2168	e67bc886e8798b8be7e70ef019905f1e_JaffaCakes118.exe	32
PID 2168 wrote to memory of 348	2168	e67bc886e8798b8be7e70ef019905f1e_JaffaCakes118.exe	32
PID 2168 wrote to memory of 348	2168	e67bc886e8798b8be7e70ef019905f1e_JaffaCakes118.exe	32
PID 2168 wrote to memory of 348	2168	e67bc886e8798b8be7e70ef019905f1e_JaffaCakes118.exe	32
PID 2168 wrote to memory of 348	2168	e67bc886e8798b8be7e70ef019905f1e_JaffaCakes118.exe	32

C:\Users\Admin\AppData\Local\Temp\e67bc886e8798b8be7e70ef019905f1e_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\e67bc886e8798b8be7e70ef019905f1e_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2180
- C:\Users\Admin\AppData\Local\Temp\e67bc886e8798b8be7e70ef019905f1e_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\e67bc886e8798b8be7e70ef019905f1e_JaffaCakes118.exe"
  2⤵
  - Writes to the Master Boot Record (MBR)
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2168
- - C:\Users\Admin\AppData\Local\Temp\e67bc886e8798b8be7e70ef019905f1e_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\e67bc886e8798b8be7e70ef019905f1e_JaffaCakes118.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of SetWindowsHookEx
    PID:348

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Pre-OS Boot

1

T1542

Bootkit

1

T1542.003

Privilege Escalation

Defense Evasion

Pre-OS Boot

1

T1542

Bootkit

1

T1542.003

Credential Access

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

Replay Monitor

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Downloads

memory/348-17-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/348-21-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/348-31-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/348-19-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/348-34-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2168-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2168-14-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/2168-7-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/2168-4-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/2168-2-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/2168-12-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/2168-30-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads