isrstealer | d8ece9627b3f6ee7906b6dea24a52ecf0c6dbac3f5da250f653b9a418e464ef1

Analysis

max time kernel
143s
max time network
123s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
10-08-2024 23:06

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General

Target

8809858de680c7a36e1bc0972c1847ef_JaffaCakes118.exe
Size

1.1MB
MD5

8809858de680c7a36e1bc0972c1847ef
SHA1

943cb9e9365bf92fa0ad9c06bc63caaa77815b05
SHA256

d8ece9627b3f6ee7906b6dea24a52ecf0c6dbac3f5da250f653b9a418e464ef1
SHA512

edaa89705d61ce71cbf114b8a92c46158d1ff0e31bd3ecb596b3ea3e2520bffcec4c8082d37fa765452486dc6988755c4724ffdba88ab4433443ae8c3cd3d2a7
SSDEEP

24576:icZKZGKzir+ldqvxmlvSFaGV4JmnLS229XPlIUrQIGPk8Puyp:i2KIgir+nqnMMCpXP5r5Gw4

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 1 IoCs

Processes:

resource	yara_rule
behavioral2/files/0x000b000000023454-5.dat	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

Checks computer location settings 2 TTPs 2 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

8809858de680c7a36e1bc0972c1847ef_JaffaCakes118.exeEasy Binder.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1302416131-1437503476-2806442725-1000\Control Panel\International\Geo\Nation	8809858de680c7a36e1bc0972c1847ef_JaffaCakes118.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1302416131-1437503476-2806442725-1000\Control Panel\International\Geo\Nation	Easy Binder.exe

Executes dropped EXE 4 IoCs

Processes:

ist.exeEasy Binder.exeist.exetemp.exe

pid	Process
316	ist.exe
228	Easy Binder.exe
4896	ist.exe
2412	temp.exe

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 4 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/4896-26-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4896-28-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4896-29-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4896-33-0x0000000000400000-0x0000000000453000-memory.dmp	upx

Suspicious use of SetThreadContext 1 IoCs

Processes:

ist.exe

description	pid	Process	procid_target
PID 316 set thread context of 4896	316	ist.exe	86

Drops file in Windows directory 64 IoCs

Processes:

temp.exe

description	ioc	Process
File created	C:\Windows\EasyBind\Contrib\Language files\Portuguese.nlf	temp.exe
File created	C:\Windows\EasyBind\Contrib\Language files\Korean.nlf	temp.exe
File created	C:\Windows\EasyBind\Contrib\Language files\Kurdish.nlf	temp.exe
File created	C:\Windows\EasyBind\Contrib\Language files\Luxembourgish.nlf	temp.exe
File created	C:\Windows\EasyBind\Contrib\Language files\Thai.nlf	temp.exe
File created	C:\Windows\EasyBind\Include\UpgradeDLL.nsh	temp.exe
File created	C:\Windows\EasyBind\Stubs\uninst	temp.exe
File opened for modification	C:\Windows\EasyBind\Contrib\Language files\Danish.nlf	temp.exe
File created	C:\Windows\EasyBind\Contrib\Language files\English.nlf	temp.exe
File opened for modification	C:\Windows\EasyBind\Contrib\UIs\default.exe	temp.exe
File opened for modification	C:\Windows\EasyBind\Include\StrFunc.nsh	temp.exe
File opened for modification	C:\Windows\EasyBind\Include\TextFunc.nsh	temp.exe
File opened for modification	C:\Windows\EasyBind\Include\WinMessages.nsh	temp.exe
File created	C:\Windows\EasyBind\Contrib\Language files\Breton.nlf	temp.exe
File opened for modification	C:\Windows\EasyBind\Contrib\Language files\Bulgarian.nlf	temp.exe
File created	C:\Windows\EasyBind\Contrib\Language files\French.nlf	temp.exe
File opened for modification	C:\Windows\EasyBind\Contrib\Language files\Latvian.nlf	temp.exe
File created	C:\Windows\EasyBind\Plugins\Splash.dll	temp.exe
File created	C:\Windows\EasyBind\Plugins\TypeLib.dll	temp.exe
File opened for modification	C:\Windows\EasyBind\Contrib\Language files\French.nlf	temp.exe
File created	C:\Windows\EasyBind\Contrib\Language files\Valencian.nlf	temp.exe
File created	C:\Windows\EasyBind\Include\Colors.nsh	temp.exe
File opened for modification	C:\Windows\EasyBind\Stubs	temp.exe
File created	C:\Windows\EasyBind\Contrib\Language files\Bulgarian.nlf	temp.exe
File created	C:\Windows\EasyBind\Include\LogicLib.nsh	temp.exe
File created	C:\Windows\EasyBind\Include\WinMessages.nsh	temp.exe
File created	C:\Windows\EasyBind\Plugins\System.dll	temp.exe
File opened for modification	C:\Windows\EasyBind\Contrib\Language files\English.nlf	temp.exe
File created	C:\Windows\EasyBind\Contrib\UIs\sdbarker_tiny.exe	temp.exe
File opened for modification	C:\Windows\EasyBind\Include\Library.nsh	temp.exe
File opened for modification	C:\Windows\EasyBind\Contrib\Language files\Bosnian.nlf	temp.exe
File created	C:\Windows\EasyBind\Contrib\Language files\Italian.nlf	temp.exe
File created	C:\Windows\EasyBind\Plugins\newadvsplash.dll	temp.exe
File opened for modification	C:\Windows\EasyBind\Contrib\Language files\Hungarian.nlf	temp.exe
File opened for modification	C:\Windows\EasyBind\Include\UpgradeDLL.nsh	temp.exe
File opened for modification	C:\Windows\EasyBind\Include\VPatchLib.nsh	temp.exe
File opened for modification	C:\Windows\EasyBind\Include	temp.exe
File opened for modification	C:\Windows\EasyBind\makensis.exe	temp.exe
File created	C:\Windows\EasyBind\Plugins\UserInfo.dll	temp.exe
File created	C:\Windows\EasyBind\Contrib\Language files\Japanese.nlf	temp.exe
File created	C:\Windows\EasyBind\Include\FileFunc.nsh	temp.exe
File created	C:\Windows\EasyBind\Stubs\zlib	temp.exe
File opened for modification	C:\Windows\EasyBind\Contrib\Language files\Catalan.nlf	temp.exe
File opened for modification	C:\Windows\EasyBind\Plugins\FindProcDLL.dll	temp.exe
File created	C:\Windows\EasyBind\Contrib\Language files\Hebrew.nlf	temp.exe
File opened for modification	C:\Windows\EasyBind\Contrib\Language files\Irish.nlf	temp.exe
File opened for modification	C:\Windows\EasyBind\Contrib\Language files\Korean.nlf	temp.exe
File opened for modification	C:\Windows\EasyBind\Plugins\Banner.dll	temp.exe
File created	C:\Windows\EasyBind\Contrib\Language files\Finnish.nlf	temp.exe
File created	C:\Windows\EasyBind\Contrib\Language files\Norwegian.nlf	temp.exe
File opened for modification	C:\Windows\EasyBind\Contrib\Language files\Luxembourgish.nlf	temp.exe
File opened for modification	C:\Windows\EasyBind\Contrib\Language files\Slovak.nlf	temp.exe
File created	C:\Windows\EasyBind\makensis.exe	temp.exe
File created	C:\Windows\EasyBind\Plugins\nsExec.dll	temp.exe
File opened for modification	C:\Windows\EasyBind\Contrib\Language files\Albanian.nlf	temp.exe
File opened for modification	C:\Windows\EasyBind\Contrib\Language files\Czech.nlf	temp.exe
File created	C:\Windows\EasyBind\Contrib\Language files\Danish.nlf	temp.exe
File created	C:\Windows\EasyBind\Contrib\Language files\German.nlf	temp.exe
File created	C:\Windows\EasyBind\Contrib\Language files\Polish.nlf	temp.exe
File opened for modification	C:\Windows\EasyBind\Include\LogicLib.nsh	temp.exe
File opened for modification	C:\Windows\EasyBind\Contrib\Language files\Lithuanian.nlf	temp.exe
File opened for modification	C:\Windows\EasyBind\Contrib\Language files\Polish.nlf	temp.exe
File opened for modification	C:\Windows\EasyBind\Contrib\Language files\Uzbek.nlf	temp.exe
File opened for modification	C:\Windows\EasyBind\Plugins	temp.exe

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

Processes:

8809858de680c7a36e1bc0972c1847ef_JaffaCakes118.exeist.exeist.exetemp.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	8809858de680c7a36e1bc0972c1847ef_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ist.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ist.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	temp.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

ist.exe

pid	Process
316	ist.exe

Suspicious use of WriteProcessMemory 16 IoCs

Processes:

8809858de680c7a36e1bc0972c1847ef_JaffaCakes118.exeist.exeEasy Binder.exe

description	pid	Process	procid_target
PID 4660 wrote to memory of 316	4660	8809858de680c7a36e1bc0972c1847ef_JaffaCakes118.exe	84
PID 4660 wrote to memory of 316	4660	8809858de680c7a36e1bc0972c1847ef_JaffaCakes118.exe	84
PID 4660 wrote to memory of 316	4660	8809858de680c7a36e1bc0972c1847ef_JaffaCakes118.exe	84
PID 4660 wrote to memory of 228	4660	8809858de680c7a36e1bc0972c1847ef_JaffaCakes118.exe	85
PID 4660 wrote to memory of 228	4660	8809858de680c7a36e1bc0972c1847ef_JaffaCakes118.exe	85
PID 316 wrote to memory of 4896	316	ist.exe	86
PID 316 wrote to memory of 4896	316	ist.exe	86
PID 316 wrote to memory of 4896	316	ist.exe	86
PID 316 wrote to memory of 4896	316	ist.exe	86
PID 316 wrote to memory of 4896	316	ist.exe	86
PID 316 wrote to memory of 4896	316	ist.exe	86
PID 316 wrote to memory of 4896	316	ist.exe	86
PID 316 wrote to memory of 4896	316	ist.exe	86
PID 228 wrote to memory of 2412	228	Easy Binder.exe	90
PID 228 wrote to memory of 2412	228	Easy Binder.exe	90
PID 228 wrote to memory of 2412	228	Easy Binder.exe	90

C:\Users\Admin\AppData\Local\Temp\8809858de680c7a36e1bc0972c1847ef_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\8809858de680c7a36e1bc0972c1847ef_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4660
- C:\Users\Admin\AppData\Local\Temp\ist.exe
  "C:\Users\Admin\AppData\Local\Temp\ist.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:316
- - C:\Users\Admin\AppData\Local\Temp\ist.exe
    /scomma "C:\Users\Admin\AppData\Local\Temp\tmp.ini"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:4896
- C:\Users\Admin\AppData\Local\Temp\Easy Binder.exe
  "C:\Users\Admin\AppData\Local\Temp\Easy Binder.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - Suspicious use of WriteProcessMemory
  PID:228
- - C:\Users\Admin\AppData\Local\Temp\temp.exe
    "C:\Users\Admin\AppData\Local\Temp\temp.exe"
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    - System Location Discovery: System Language Discovery
    PID:2412

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\Easy Binder.exe

Filesize
2.3MB

MD5
efbc9f49dd2f2e1088cdcec3cf35a41b

SHA1
ecef7f277a50420d08fa7a9e0cbd8f37faef3394

SHA256
cf28de8089bc70759c9d524cbbac2c3d46c4aed10ac57f622086e71032226295

SHA512
9506331e80d4027e6e8c51ff8424ebe45226a63ab11a7bf228a4e1c5ecfe97606f507b47470e5015baba5cef5cae37fd7fd3caac7ea55ceac4894156d10cc665

Download Submit
C:\Users\Admin\AppData\Local\Temp\ist.exe

Filesize
204KB

MD5
f367fac37fae9dc205e79c22f92d8b46

SHA1
4da5ef2b108e97743e7e8f931bca6a0e7477fb42

SHA256
f0e47658f3563af754aea9bed76619326b5425f49e4cffc9cf292d2ea85e98dc

SHA512
2c8cc3dd15f1f8af1948ad304c14b575e3651c74786ca8ff97004c815656c0f6d25f0b328631b0712c9fc9b40858c8049c671f9427212e339422d64cd8ea0aaf

Download Submit
C:\Users\Admin\AppData\Local\Temp\temp.exe

Filesize
725KB

MD5
df21207322bb1e8511a824107e852e16

SHA1
4818206adb4235428f76954fc51eb319215d8147

SHA256
5eab7cbc6741aee4fe457138732e8f07751ce360aba25f973e41cf96a6b880b5

SHA512
85981d12a547a24d4218479aad1ec0ad72307f931456c9eb042a2c1647063ade23b2c84229fcb1c4e0c6fc498562fd24eb0d8c9afd46243223f7f4afea2d63c7

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp.ini

Filesize
5B

MD5
d1ea279fb5559c020a1b4137dc4de237

SHA1
db6f8988af46b56216a6f0daf95ab8c9bdb57400

SHA256
fcdcc2c46896915a1c695d6231f0fee336a668531b7a3da46178c80362546dba

SHA512
720e9c284f0559015312df7fe977563e5e16f48d3506e51eb4016adf7971924d352f740b030aa3adc81b6f65fd1dba12df06d10fa6c115074e5097e7ee0f08b3

Download Submit
memory/228-40-0x0000000000ED0000-0x0000000000ED8000-memory.dmp

Filesize
32KB

Download
memory/228-39-0x000000001BE10000-0x000000001BEAC000-memory.dmp

Filesize
624KB

Download
memory/228-267-0x00007FFD07795000-0x00007FFD07796000-memory.dmp

Filesize
4KB

Download
memory/228-35-0x000000001B2C0000-0x000000001B366000-memory.dmp

Filesize
664KB

Download
memory/228-36-0x00007FFD074E0000-0x00007FFD07E81000-memory.dmp

Filesize
9.6MB

Download
memory/228-37-0x00007FFD074E0000-0x00007FFD07E81000-memory.dmp

Filesize
9.6MB

Download
memory/228-38-0x000000001B840000-0x000000001BD0E000-memory.dmp

Filesize
4.8MB

Download
memory/228-34-0x00007FFD07795000-0x00007FFD07796000-memory.dmp

Filesize
4KB

Download
memory/228-266-0x00007FFD074E0000-0x00007FFD07E81000-memory.dmp

Filesize
9.6MB

Download
memory/228-41-0x000000001BF70000-0x000000001BFBC000-memory.dmp

Filesize
304KB

Download
memory/2412-265-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/4896-28-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4896-26-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4896-29-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4896-33-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download