isrstealer | dc9ccaaac633ec7c47aea91fa1779d800a66f157864d0e2642455430fabc9b1d

General

Target

e254de2ef839220866627984a0a85b6c_JaffaCakes118.exe
Size

921KB
MD5

e254de2ef839220866627984a0a85b6c
SHA1

03a9f17b3f7da292394553dc2dcdd01cfb210ca7
SHA256

dc9ccaaac633ec7c47aea91fa1779d800a66f157864d0e2642455430fabc9b1d
SHA512

2c5c6d3946a4966f25af9764eaef86bb73f2afc7e1b815d5c2b758cc4d274e4aca1ef09ffcb169809e00299921c077fefad88a8b5c9a63181a33d1ff1e129b10
SSDEEP

24576:uRmJkcoQricOIQxiZY1iaC8W5rtbvw1+rT5Xe:7JZoQrbTFZY1iaC9RzU+Q

Score

10^/10

isrstealer collection 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 4 IoCs

resource	yara_rule
behavioral2/memory/3324-0-0x0000000000400000-0x0000000000447000-memory.dmp	family_isrstealer
behavioral2/memory/3324-1-0x0000000000400000-0x0000000000447000-memory.dmp	family_isrstealer
behavioral2/memory/3324-14-0x0000000000400000-0x0000000000447000-memory.dmp	family_isrstealer
behavioral2/memory/3324-23-0x0000000000400000-0x0000000000447000-memory.dmp	family_isrstealer

Isrstealer family
isrstealer

Detected Nirsoft tools 2 IoCs

Free utilities often used by attackers which can steal passwords, product keys, etc.

resource	yara_rule
behavioral2/memory/2996-19-0x0000000000400000-0x000000000041F000-memory.dmp	Nirsoft
behavioral2/memory/2996-21-0x0000000000400000-0x000000000041F000-memory.dmp	Nirsoft

NirSoft MailPassView 2 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral2/memory/2996-19-0x0000000000400000-0x000000000041F000-memory.dmp	MailPassView
behavioral2/memory/2996-21-0x0000000000400000-0x000000000041F000-memory.dmp	MailPassView

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

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	e254de2ef839220866627984a0a85b6c_JaffaCakes118.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 3324 set thread context of 2800	3324	e254de2ef839220866627984a0a85b6c_JaffaCakes118.exe	83
PID 3324 set thread context of 2996	3324	e254de2ef839220866627984a0a85b6c_JaffaCakes118.exe	89

UPX packed file 10 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2800-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2800-7-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2800-8-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2800-9-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2800-11-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2996-16-0x0000000000400000-0x000000000041F000-memory.dmp	upx
behavioral2/memory/2996-18-0x0000000000400000-0x000000000041F000-memory.dmp	upx
behavioral2/memory/2996-20-0x0000000000400000-0x000000000041F000-memory.dmp	upx
behavioral2/memory/2996-19-0x0000000000400000-0x000000000041F000-memory.dmp	upx
behavioral2/memory/2996-21-0x0000000000400000-0x000000000041F000-memory.dmp	upx

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 4 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	e254de2ef839220866627984a0a85b6c_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	e254de2ef839220866627984a0a85b6c_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	e254de2ef839220866627984a0a85b6c_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	e254de2ef839220866627984a0a85b6c_JaffaCakes118.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3324	e254de2ef839220866627984a0a85b6c_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 22 IoCs

description	pid	Process	procid_target
PID 3352 wrote to memory of 3324	3352	e254de2ef839220866627984a0a85b6c_JaffaCakes118.exe	82
PID 3352 wrote to memory of 3324	3352	e254de2ef839220866627984a0a85b6c_JaffaCakes118.exe	82
PID 3352 wrote to memory of 3324	3352	e254de2ef839220866627984a0a85b6c_JaffaCakes118.exe	82
PID 3352 wrote to memory of 3324	3352	e254de2ef839220866627984a0a85b6c_JaffaCakes118.exe	82
PID 3352 wrote to memory of 3324	3352	e254de2ef839220866627984a0a85b6c_JaffaCakes118.exe	82
PID 3352 wrote to memory of 3324	3352	e254de2ef839220866627984a0a85b6c_JaffaCakes118.exe	82
PID 3324 wrote to memory of 2800	3324	e254de2ef839220866627984a0a85b6c_JaffaCakes118.exe	83
PID 3324 wrote to memory of 2800	3324	e254de2ef839220866627984a0a85b6c_JaffaCakes118.exe	83
PID 3324 wrote to memory of 2800	3324	e254de2ef839220866627984a0a85b6c_JaffaCakes118.exe	83
PID 3324 wrote to memory of 2800	3324	e254de2ef839220866627984a0a85b6c_JaffaCakes118.exe	83
PID 3324 wrote to memory of 2800	3324	e254de2ef839220866627984a0a85b6c_JaffaCakes118.exe	83
PID 3324 wrote to memory of 2800	3324	e254de2ef839220866627984a0a85b6c_JaffaCakes118.exe	83
PID 3324 wrote to memory of 2800	3324	e254de2ef839220866627984a0a85b6c_JaffaCakes118.exe	83
PID 3324 wrote to memory of 2800	3324	e254de2ef839220866627984a0a85b6c_JaffaCakes118.exe	83
PID 3324 wrote to memory of 2996	3324	e254de2ef839220866627984a0a85b6c_JaffaCakes118.exe	89
PID 3324 wrote to memory of 2996	3324	e254de2ef839220866627984a0a85b6c_JaffaCakes118.exe	89
PID 3324 wrote to memory of 2996	3324	e254de2ef839220866627984a0a85b6c_JaffaCakes118.exe	89
PID 3324 wrote to memory of 2996	3324	e254de2ef839220866627984a0a85b6c_JaffaCakes118.exe	89
PID 3324 wrote to memory of 2996	3324	e254de2ef839220866627984a0a85b6c_JaffaCakes118.exe	89
PID 3324 wrote to memory of 2996	3324	e254de2ef839220866627984a0a85b6c_JaffaCakes118.exe	89
PID 3324 wrote to memory of 2996	3324	e254de2ef839220866627984a0a85b6c_JaffaCakes118.exe	89
PID 3324 wrote to memory of 2996	3324	e254de2ef839220866627984a0a85b6c_JaffaCakes118.exe	89

C:\Users\Admin\AppData\Local\Temp\e254de2ef839220866627984a0a85b6c_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\e254de2ef839220866627984a0a85b6c_JaffaCakes118.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3352
- C:\Users\Admin\AppData\Local\Temp\e254de2ef839220866627984a0a85b6c_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\e254de2ef839220866627984a0a85b6c_JaffaCakes118.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3324
- - C:\Users\Admin\AppData\Local\Temp\e254de2ef839220866627984a0a85b6c_JaffaCakes118.exe
    /scomma "C:\Users\Admin\AppData\Local\Temp\nE7QGNJ6f9.ini"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2800
- - C:\Users\Admin\AppData\Local\Temp\e254de2ef839220866627984a0a85b6c_JaffaCakes118.exe
    /scomma "C:\Users\Admin\AppData\Local\Temp\vTCrYrR9n1.ini"
    3⤵
    - Accesses Microsoft Outlook accounts
    - System Location Discovery: System Language Discovery
    PID:2996

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 Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\nE7QGNJ6f9.ini

Filesize
5B

MD5
d1ea279fb5559c020a1b4137dc4de237

SHA1
db6f8988af46b56216a6f0daf95ab8c9bdb57400

SHA256
fcdcc2c46896915a1c695d6231f0fee336a668531b7a3da46178c80362546dba

SHA512
720e9c284f0559015312df7fe977563e5e16f48d3506e51eb4016adf7971924d352f740b030aa3adc81b6f65fd1dba12df06d10fa6c115074e5097e7ee0f08b3

Download Submit
memory/2800-11-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2800-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2800-7-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2800-8-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2800-9-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2996-20-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2996-16-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2996-18-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2996-19-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2996-21-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/3324-1-0x0000000000400000-0x0000000000447000-memory.dmp

Filesize
284KB

Download
memory/3324-14-0x0000000000400000-0x0000000000447000-memory.dmp

Filesize
284KB

Download
memory/3324-0-0x0000000000400000-0x0000000000447000-memory.dmp

Filesize
284KB

Download
memory/3324-23-0x0000000000400000-0x0000000000447000-memory.dmp

Filesize
284KB

Download

Analysis

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