isrstealer | 9d854d9944e219935d898fa6a41aef9bd3768e73d884d7b72dad23115362bc48

Analysis

max time kernel
144s
max time network
145s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
22-08-2024 19:37

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General

Target

b8e05d10f5bde741fbfe023fda66daed_JaffaCakes118.exe
Size

170KB
MD5

b8e05d10f5bde741fbfe023fda66daed
SHA1

0634e31e52566045e0fe26002914ab7e09019930
SHA256

9d854d9944e219935d898fa6a41aef9bd3768e73d884d7b72dad23115362bc48
SHA512

9720c40e51749f7a872142d65337e9cecfaea484bfd10b93e6dccf93f00dcf38f5e9bff79dbaa56595c276eb86b6e28b4d9a7e2af5711258c595bf3225bcfd0a
SSDEEP

3072:Zs6wqv1IJr8Aa4scq3g3bY0cQj4iF8dq3F7GZ+2bAYPLr4PVBS:668/AWD3FyZ5A1V

Score

10^/10

isrstealer discovery 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 2 IoCs

resource	yara_rule
behavioral2/memory/4736-3-0x0000000000400000-0x0000000000414000-memory.dmp	family_isrstealer
behavioral2/memory/4736-6-0x0000000000400000-0x0000000000414000-memory.dmp	family_isrstealer

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2104 set thread context of 4736	2104	b8e05d10f5bde741fbfe023fda66daed_JaffaCakes118.exe	91

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	b8e05d10f5bde741fbfe023fda66daed_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	AppLaunch.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
4736	AppLaunch.exe
4736	AppLaunch.exe
4736	AppLaunch.exe
4736	AppLaunch.exe
4736	AppLaunch.exe
4736	AppLaunch.exe
4736	AppLaunch.exe
4736	AppLaunch.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2104	b8e05d10f5bde741fbfe023fda66daed_JaffaCakes118.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4736	AppLaunch.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2104 wrote to memory of 4736	2104	b8e05d10f5bde741fbfe023fda66daed_JaffaCakes118.exe	91
PID 2104 wrote to memory of 4736	2104	b8e05d10f5bde741fbfe023fda66daed_JaffaCakes118.exe	91
PID 2104 wrote to memory of 4736	2104	b8e05d10f5bde741fbfe023fda66daed_JaffaCakes118.exe	91
PID 2104 wrote to memory of 4736	2104	b8e05d10f5bde741fbfe023fda66daed_JaffaCakes118.exe	91
PID 2104 wrote to memory of 4736	2104	b8e05d10f5bde741fbfe023fda66daed_JaffaCakes118.exe	91
PID 2104 wrote to memory of 4736	2104	b8e05d10f5bde741fbfe023fda66daed_JaffaCakes118.exe	91
PID 2104 wrote to memory of 4736	2104	b8e05d10f5bde741fbfe023fda66daed_JaffaCakes118.exe	91
PID 2104 wrote to memory of 4736	2104	b8e05d10f5bde741fbfe023fda66daed_JaffaCakes118.exe	91

C:\Users\Admin\AppData\Local\Temp\b8e05d10f5bde741fbfe023fda66daed_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\b8e05d10f5bde741fbfe023fda66daed_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2104
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\AppLaunch.exe
  C:\Windows\Microsoft.NET\Framework\v2.0.50727\AppLaunch.exe
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of SetWindowsHookEx
  PID:4736

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/2104-0-0x00000000749F2000-0x00000000749F3000-memory.dmp

Filesize
4KB

Download
memory/2104-1-0x00000000749F0000-0x0000000074FA1000-memory.dmp

Filesize
5.7MB

Download
memory/2104-2-0x00000000749F0000-0x0000000074FA1000-memory.dmp

Filesize
5.7MB

Download
memory/2104-8-0x00000000749F0000-0x0000000074FA1000-memory.dmp

Filesize
5.7MB

Download
memory/4736-3-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4736-6-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download