isrstealer | 9ffdc9c7ec35f2e747c109071c0ec23995a7261674d3f6915fec1e3af904a12f

Analysis

max time kernel
13s
max time network
19s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
16/03/2025, 01:36

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General

Target

JaffaCakes118_785e50fbd71019805a7979d83a98972a.exe
Size

481KB
MD5

785e50fbd71019805a7979d83a98972a
SHA1

1527ca576e292205bc084e99c439b4b42607dc1e
SHA256

9ffdc9c7ec35f2e747c109071c0ec23995a7261674d3f6915fec1e3af904a12f
SHA512

90715fd7bcfdaaefd84d5470c18a7cc169eee550dbba0c5fe065267313ae7c06c2a68053b16522022b95420099a3345076522ae9137991fee94fdfa403e0d286
SSDEEP

12288:68aXcGD59oXrDvD4d6NUJcoNLeTPmo4ydpb:iXcI59Gr7D44eYTpb

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
behavioral1/memory/2216-5-0x0000000000400000-0x0000000000470000-memory.dmp	family_isrstealer
behavioral1/memory/2216-8-0x0000000000400000-0x0000000000470000-memory.dmp	family_isrstealer
behavioral1/memory/2216-66-0x0000000000400000-0x0000000000470000-memory.dmp	family_isrstealer
behavioral1/memory/2216-76-0x0000000000400000-0x0000000000470000-memory.dmp	family_isrstealer

Isrstealer family
isrstealer

Detected Nirsoft tools 10 IoCs

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

resource	yara_rule
behavioral1/memory/2876-37-0x0000000000400000-0x0000000000454000-memory.dmp	Nirsoft
behavioral1/memory/2876-39-0x0000000000400000-0x0000000000454000-memory.dmp	Nirsoft
behavioral1/memory/2184-65-0x0000000000400000-0x0000000000426000-memory.dmp	Nirsoft
behavioral1/memory/2876-40-0x0000000000400000-0x0000000000454000-memory.dmp	Nirsoft
behavioral1/memory/2184-62-0x0000000000400000-0x0000000000426000-memory.dmp	Nirsoft
behavioral1/memory/2184-61-0x0000000000400000-0x0000000000426000-memory.dmp	Nirsoft
behavioral1/memory/2828-59-0x0000000000400000-0x000000000041F000-memory.dmp	Nirsoft
behavioral1/memory/2828-56-0x0000000000400000-0x000000000041F000-memory.dmp	Nirsoft
behavioral1/memory/2876-70-0x0000000000400000-0x0000000000454000-memory.dmp	Nirsoft
behavioral1/memory/2828-73-0x0000000000400000-0x000000000041F000-memory.dmp	Nirsoft

NirSoft MailPassView 3 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral1/memory/2828-59-0x0000000000400000-0x000000000041F000-memory.dmp	MailPassView
behavioral1/memory/2828-56-0x0000000000400000-0x000000000041F000-memory.dmp	MailPassView
behavioral1/memory/2828-73-0x0000000000400000-0x000000000041F000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 4 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral1/memory/2876-37-0x0000000000400000-0x0000000000454000-memory.dmp	WebBrowserPassView
behavioral1/memory/2876-39-0x0000000000400000-0x0000000000454000-memory.dmp	WebBrowserPassView
behavioral1/memory/2876-40-0x0000000000400000-0x0000000000454000-memory.dmp	WebBrowserPassView
behavioral1/memory/2876-70-0x0000000000400000-0x0000000000454000-memory.dmp	WebBrowserPassView

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

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	JaffaCakes118_785e50fbd71019805a7979d83a98972a.exe

Suspicious use of SetThreadContext 5 IoCs

description	pid	Process	procid_target
PID 2304 set thread context of 2216	2304	JaffaCakes118_785e50fbd71019805a7979d83a98972a.exe	29
PID 2216 set thread context of 2996	2216	JaffaCakes118_785e50fbd71019805a7979d83a98972a.exe	30
PID 2996 set thread context of 2876	2996	JaffaCakes118_785e50fbd71019805a7979d83a98972a.exe	31
PID 2996 set thread context of 2184	2996	JaffaCakes118_785e50fbd71019805a7979d83a98972a.exe	32
PID 2996 set thread context of 2828	2996	JaffaCakes118_785e50fbd71019805a7979d83a98972a.exe	33

UPX packed file 10 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2828-51-0x0000000000400000-0x000000000041F000-memory.dmp	upx
behavioral1/memory/2184-46-0x0000000000400000-0x0000000000426000-memory.dmp	upx
behavioral1/memory/2184-65-0x0000000000400000-0x0000000000426000-memory.dmp	upx
behavioral1/memory/2184-62-0x0000000000400000-0x0000000000426000-memory.dmp	upx
behavioral1/memory/2184-61-0x0000000000400000-0x0000000000426000-memory.dmp	upx
behavioral1/memory/2184-60-0x0000000000400000-0x0000000000426000-memory.dmp	upx
behavioral1/memory/2828-59-0x0000000000400000-0x000000000041F000-memory.dmp	upx
behavioral1/memory/2828-56-0x0000000000400000-0x000000000041F000-memory.dmp	upx
behavioral1/memory/2828-55-0x0000000000400000-0x000000000041F000-memory.dmp	upx
behavioral1/memory/2828-73-0x0000000000400000-0x000000000041F000-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 6 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	JaffaCakes118_785e50fbd71019805a7979d83a98972a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_785e50fbd71019805a7979d83a98972a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_785e50fbd71019805a7979d83a98972a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_785e50fbd71019805a7979d83a98972a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_785e50fbd71019805a7979d83a98972a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_785e50fbd71019805a7979d83a98972a.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2184	JaffaCakes118_785e50fbd71019805a7979d83a98972a.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2216	JaffaCakes118_785e50fbd71019805a7979d83a98972a.exe

Suspicious use of WriteProcessMemory 38 IoCs

description	pid	Process	procid_target
PID 2304 wrote to memory of 2216	2304	JaffaCakes118_785e50fbd71019805a7979d83a98972a.exe	29
PID 2304 wrote to memory of 2216	2304	JaffaCakes118_785e50fbd71019805a7979d83a98972a.exe	29
PID 2304 wrote to memory of 2216	2304	JaffaCakes118_785e50fbd71019805a7979d83a98972a.exe	29
PID 2304 wrote to memory of 2216	2304	JaffaCakes118_785e50fbd71019805a7979d83a98972a.exe	29
PID 2304 wrote to memory of 2216	2304	JaffaCakes118_785e50fbd71019805a7979d83a98972a.exe	29
PID 2304 wrote to memory of 2216	2304	JaffaCakes118_785e50fbd71019805a7979d83a98972a.exe	29
PID 2304 wrote to memory of 2216	2304	JaffaCakes118_785e50fbd71019805a7979d83a98972a.exe	29
PID 2304 wrote to memory of 2216	2304	JaffaCakes118_785e50fbd71019805a7979d83a98972a.exe	29
PID 2216 wrote to memory of 2996	2216	JaffaCakes118_785e50fbd71019805a7979d83a98972a.exe	30
PID 2216 wrote to memory of 2996	2216	JaffaCakes118_785e50fbd71019805a7979d83a98972a.exe	30
PID 2216 wrote to memory of 2996	2216	JaffaCakes118_785e50fbd71019805a7979d83a98972a.exe	30
PID 2216 wrote to memory of 2996	2216	JaffaCakes118_785e50fbd71019805a7979d83a98972a.exe	30
PID 2216 wrote to memory of 2996	2216	JaffaCakes118_785e50fbd71019805a7979d83a98972a.exe	30
PID 2216 wrote to memory of 2996	2216	JaffaCakes118_785e50fbd71019805a7979d83a98972a.exe	30
PID 2216 wrote to memory of 2996	2216	JaffaCakes118_785e50fbd71019805a7979d83a98972a.exe	30
PID 2216 wrote to memory of 2996	2216	JaffaCakes118_785e50fbd71019805a7979d83a98972a.exe	30
PID 2216 wrote to memory of 2996	2216	JaffaCakes118_785e50fbd71019805a7979d83a98972a.exe	30
PID 2216 wrote to memory of 2996	2216	JaffaCakes118_785e50fbd71019805a7979d83a98972a.exe	30
PID 2216 wrote to memory of 2996	2216	JaffaCakes118_785e50fbd71019805a7979d83a98972a.exe	30
PID 2216 wrote to memory of 2996	2216	JaffaCakes118_785e50fbd71019805a7979d83a98972a.exe	30
PID 2996 wrote to memory of 2876	2996	JaffaCakes118_785e50fbd71019805a7979d83a98972a.exe	31
PID 2996 wrote to memory of 2876	2996	JaffaCakes118_785e50fbd71019805a7979d83a98972a.exe	31
PID 2996 wrote to memory of 2876	2996	JaffaCakes118_785e50fbd71019805a7979d83a98972a.exe	31
PID 2996 wrote to memory of 2876	2996	JaffaCakes118_785e50fbd71019805a7979d83a98972a.exe	31
PID 2996 wrote to memory of 2876	2996	JaffaCakes118_785e50fbd71019805a7979d83a98972a.exe	31
PID 2996 wrote to memory of 2876	2996	JaffaCakes118_785e50fbd71019805a7979d83a98972a.exe	31
PID 2996 wrote to memory of 2184	2996	JaffaCakes118_785e50fbd71019805a7979d83a98972a.exe	32
PID 2996 wrote to memory of 2184	2996	JaffaCakes118_785e50fbd71019805a7979d83a98972a.exe	32
PID 2996 wrote to memory of 2184	2996	JaffaCakes118_785e50fbd71019805a7979d83a98972a.exe	32
PID 2996 wrote to memory of 2184	2996	JaffaCakes118_785e50fbd71019805a7979d83a98972a.exe	32
PID 2996 wrote to memory of 2184	2996	JaffaCakes118_785e50fbd71019805a7979d83a98972a.exe	32
PID 2996 wrote to memory of 2184	2996	JaffaCakes118_785e50fbd71019805a7979d83a98972a.exe	32
PID 2996 wrote to memory of 2828	2996	JaffaCakes118_785e50fbd71019805a7979d83a98972a.exe	33
PID 2996 wrote to memory of 2828	2996	JaffaCakes118_785e50fbd71019805a7979d83a98972a.exe	33
PID 2996 wrote to memory of 2828	2996	JaffaCakes118_785e50fbd71019805a7979d83a98972a.exe	33
PID 2996 wrote to memory of 2828	2996	JaffaCakes118_785e50fbd71019805a7979d83a98972a.exe	33
PID 2996 wrote to memory of 2828	2996	JaffaCakes118_785e50fbd71019805a7979d83a98972a.exe	33
PID 2996 wrote to memory of 2828	2996	JaffaCakes118_785e50fbd71019805a7979d83a98972a.exe	33

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_785e50fbd71019805a7979d83a98972a.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_785e50fbd71019805a7979d83a98972a.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2304
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_785e50fbd71019805a7979d83a98972a.exe
  "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_785e50fbd71019805a7979d83a98972a.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2216
- - C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_785e50fbd71019805a7979d83a98972a.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_785e50fbd71019805a7979d83a98972a.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2996
  - - C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_785e50fbd71019805a7979d83a98972a.exe
      "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_785e50fbd71019805a7979d83a98972a.exe" /scomma C:\Users\Admin\AppData\Local\Temp\data.dmp
      4⤵
      System Location Discovery: System Language Discovery
      PID:2876
  - - C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_785e50fbd71019805a7979d83a98972a.exe
      "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_785e50fbd71019805a7979d83a98972a.exe" /scomma C:\Users\Admin\AppData\Local\Temp\data1.dmp
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious use of AdjustPrivilegeToken
      PID:2184
  - - C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_785e50fbd71019805a7979d83a98972a.exe
      "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_785e50fbd71019805a7979d83a98972a.exe" /scomma C:\Users\Admin\AppData\Local\Temp\data2.dmp
      4⤵
      Accesses Microsoft Outlook accounts
      System Location Discovery: System Language Discovery
      PID:2828

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

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Data from Local System

T1005

Email Collection

T1114

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2184-60-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2184-46-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2184-41-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2184-65-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2184-62-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2184-61-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2216-0-0x0000000000400000-0x0000000000470000-memory.dmp

Filesize
448KB

Download
memory/2216-2-0x0000000000400000-0x0000000000470000-memory.dmp

Filesize
448KB

Download
memory/2216-66-0x0000000000400000-0x0000000000470000-memory.dmp

Filesize
448KB

Download
memory/2216-76-0x0000000000400000-0x0000000000470000-memory.dmp

Filesize
448KB

Download
memory/2216-8-0x0000000000400000-0x0000000000470000-memory.dmp

Filesize
448KB

Download
memory/2216-5-0x0000000000400000-0x0000000000470000-memory.dmp

Filesize
448KB

Download
memory/2216-6-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2828-47-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2828-51-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2828-73-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2828-59-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2828-56-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2828-55-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2876-39-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/2876-40-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/2876-70-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/2876-33-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/2876-37-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/2996-31-0x0000000000400000-0x000000000045F000-memory.dmp

Filesize
380KB

Download
memory/2996-30-0x0000000000400000-0x000000000045F000-memory.dmp

Filesize
380KB

Download
memory/2996-29-0x0000000000400000-0x000000000045F000-memory.dmp

Filesize
380KB

Download
memory/2996-32-0x0000000000400000-0x000000000045F000-memory.dmp

Filesize
380KB

Download
memory/2996-19-0x0000000000400000-0x000000000045F000-memory.dmp

Filesize
380KB

Download
memory/2996-17-0x0000000000400000-0x000000000045F000-memory.dmp

Filesize
380KB

Download
memory/2996-15-0x0000000000400000-0x000000000045F000-memory.dmp

Filesize
380KB

Download
memory/2996-13-0x0000000000400000-0x000000000045F000-memory.dmp

Filesize
380KB

Download
memory/2996-58-0x0000000000400000-0x000000000045F000-memory.dmp

Filesize
380KB

Download
memory/2996-23-0x0000000000400000-0x000000000045F000-memory.dmp

Filesize
380KB

Download
memory/2996-21-0x0000000000400000-0x000000000045F000-memory.dmp

Filesize
380KB

Download
memory/2996-25-0x0000000000400000-0x000000000045F000-memory.dmp

Filesize
380KB

Download