isrstealer | 19877426654096d35fa4a46656f35207fa19b3657c50c284cf601332243b9199

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
10-05-2024 17:53

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General

Target

3050f4e4954811a6c0b01a429706a4f7_JaffaCakes118.exe
Size

525KB
MD5

3050f4e4954811a6c0b01a429706a4f7
SHA1

b45715196d8302c56610cd95b2b246169391aa68
SHA256

19877426654096d35fa4a46656f35207fa19b3657c50c284cf601332243b9199
SHA512

a2c45736c6b71cfcdf78bc7e840a17428ad5f1e23167bf7dbef48289317e93580c46ec65b6e8d7ded625f4d1024498ac2fd908cb2b47c15aa7fa6fcb74d69130
SSDEEP

12288:ioQp2RoELtccvIjP9845Ss/krM6D8aSUAZph8ZAEMjoFzlmjs:7nbvS9840ssIGbSUArOmoRl5

Score

10^/10

isrstealer collection 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 3 IoCs

resource	yara_rule
behavioral2/memory/3860-11-0x0000000000400000-0x0000000000442000-memory.dmp	family_isrstealer
behavioral2/memory/3860-17-0x0000000000400000-0x0000000000442000-memory.dmp	family_isrstealer
behavioral2/memory/3860-36-0x0000000000400000-0x0000000000442000-memory.dmp	family_isrstealer

NirSoft MailPassView 1 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral2/memory/2696-35-0x0000000000400000-0x000000000041F000-memory.dmp	MailPassView

Nirsoft 1 IoCs

resource	yara_rule
behavioral2/memory/2696-35-0x0000000000400000-0x000000000041F000-memory.dmp	Nirsoft

Executes dropped EXE 3 IoCs

pid	Process
3860	svhost.exe
2096	svhost.exe
2696	svhost.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 8 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2096-20-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2096-23-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2096-24-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2096-28-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2096-27-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2696-34-0x0000000000400000-0x000000000041F000-memory.dmp	upx
behavioral2/memory/2696-32-0x0000000000400000-0x000000000041F000-memory.dmp	upx
behavioral2/memory/2696-35-0x0000000000400000-0x000000000041F000-memory.dmp	upx

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	svhost.exe

Drops desktop.ini file(s) 2 IoCs

description	ioc	Process
File created	C:\Windows\assembly\Desktop.ini	3050f4e4954811a6c0b01a429706a4f7_JaffaCakes118.exe
File opened for modification	C:\Windows\assembly\Desktop.ini	3050f4e4954811a6c0b01a429706a4f7_JaffaCakes118.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 3172 set thread context of 3860	3172	3050f4e4954811a6c0b01a429706a4f7_JaffaCakes118.exe	91
PID 3860 set thread context of 2096	3860	svhost.exe	94
PID 3860 set thread context of 2696	3860	svhost.exe	96

Drops file in Windows directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Windows\assembly	3050f4e4954811a6c0b01a429706a4f7_JaffaCakes118.exe
File created	C:\Windows\assembly\Desktop.ini	3050f4e4954811a6c0b01a429706a4f7_JaffaCakes118.exe
File opened for modification	C:\Windows\assembly\Desktop.ini	3050f4e4954811a6c0b01a429706a4f7_JaffaCakes118.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
4552	timeout.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
3172	3050f4e4954811a6c0b01a429706a4f7_JaffaCakes118.exe
3172	3050f4e4954811a6c0b01a429706a4f7_JaffaCakes118.exe
3172	3050f4e4954811a6c0b01a429706a4f7_JaffaCakes118.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3172	3050f4e4954811a6c0b01a429706a4f7_JaffaCakes118.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3860	svhost.exe

Suspicious use of WriteProcessMemory 35 IoCs

description	pid	Process	procid_target
PID 3172 wrote to memory of 5076	3172	3050f4e4954811a6c0b01a429706a4f7_JaffaCakes118.exe	88
PID 3172 wrote to memory of 5076	3172	3050f4e4954811a6c0b01a429706a4f7_JaffaCakes118.exe	88
PID 3172 wrote to memory of 5076	3172	3050f4e4954811a6c0b01a429706a4f7_JaffaCakes118.exe	88
PID 5076 wrote to memory of 2304	5076	cmd.exe	90
PID 5076 wrote to memory of 2304	5076	cmd.exe	90
PID 5076 wrote to memory of 2304	5076	cmd.exe	90
PID 3172 wrote to memory of 3860	3172	3050f4e4954811a6c0b01a429706a4f7_JaffaCakes118.exe	91
PID 3172 wrote to memory of 3860	3172	3050f4e4954811a6c0b01a429706a4f7_JaffaCakes118.exe	91
PID 3172 wrote to memory of 3860	3172	3050f4e4954811a6c0b01a429706a4f7_JaffaCakes118.exe	91
PID 3172 wrote to memory of 3860	3172	3050f4e4954811a6c0b01a429706a4f7_JaffaCakes118.exe	91
PID 3172 wrote to memory of 3860	3172	3050f4e4954811a6c0b01a429706a4f7_JaffaCakes118.exe	91
PID 3172 wrote to memory of 3860	3172	3050f4e4954811a6c0b01a429706a4f7_JaffaCakes118.exe	91
PID 3172 wrote to memory of 3860	3172	3050f4e4954811a6c0b01a429706a4f7_JaffaCakes118.exe	91
PID 3172 wrote to memory of 448	3172	3050f4e4954811a6c0b01a429706a4f7_JaffaCakes118.exe	92
PID 3172 wrote to memory of 448	3172	3050f4e4954811a6c0b01a429706a4f7_JaffaCakes118.exe	92
PID 3172 wrote to memory of 448	3172	3050f4e4954811a6c0b01a429706a4f7_JaffaCakes118.exe	92
PID 3860 wrote to memory of 2096	3860	svhost.exe	94
PID 3860 wrote to memory of 2096	3860	svhost.exe	94
PID 3860 wrote to memory of 2096	3860	svhost.exe	94
PID 3860 wrote to memory of 2096	3860	svhost.exe	94
PID 3860 wrote to memory of 2096	3860	svhost.exe	94
PID 3860 wrote to memory of 2096	3860	svhost.exe	94
PID 3860 wrote to memory of 2096	3860	svhost.exe	94
PID 3860 wrote to memory of 2096	3860	svhost.exe	94
PID 448 wrote to memory of 4552	448	cmd.exe	95
PID 448 wrote to memory of 4552	448	cmd.exe	95
PID 448 wrote to memory of 4552	448	cmd.exe	95
PID 3860 wrote to memory of 2696	3860	svhost.exe	96
PID 3860 wrote to memory of 2696	3860	svhost.exe	96
PID 3860 wrote to memory of 2696	3860	svhost.exe	96
PID 3860 wrote to memory of 2696	3860	svhost.exe	96
PID 3860 wrote to memory of 2696	3860	svhost.exe	96
PID 3860 wrote to memory of 2696	3860	svhost.exe	96
PID 3860 wrote to memory of 2696	3860	svhost.exe	96
PID 3860 wrote to memory of 2696	3860	svhost.exe	96

C:\Users\Admin\AppData\Local\Temp\3050f4e4954811a6c0b01a429706a4f7_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\3050f4e4954811a6c0b01a429706a4f7_JaffaCakes118.exe"
1⤵
- Drops desktop.ini file(s)
- Suspicious use of SetThreadContext
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3172
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:5076
- - C:\Windows\SysWOW64\reg.exe
    reg add "HKCU\Software\Microsoft\Windows NT\CurrentVersion\Windows" /v Load /t REG_SZ /d "C:\Users\Admin\AppData\Local\Temp\GoodheaTH\GoodheaTH.exe.lnk " /f
    3⤵
    PID:2304
- C:\Users\Admin\AppData\Local\Temp\svhost.exe
  "C:\Users\Admin\AppData\Local\Temp\svhost.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3860
- - C:\Users\Admin\AppData\Local\Temp\svhost.exe
    /scomma "C:\Users\Admin\AppData\Local\Temp\AW0OMzkwea.ini"
    3⤵
    - Executes dropped EXE
    PID:2096
- - C:\Users\Admin\AppData\Local\Temp\svhost.exe
    /scomma "C:\Users\Admin\AppData\Local\Temp\6i68b09ZxJ.ini"
    3⤵
    - Executes dropped EXE
    - Accesses Microsoft Outlook accounts
    PID:2696
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\GoodheaTH\GoodheaTH.exe.bat
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:448
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 300
    3⤵
    - Delays execution with timeout.exe
    PID:4552

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Email Collection

T1114

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\AW0OMzkwea.ini

Filesize
5B

MD5
d1ea279fb5559c020a1b4137dc4de237

SHA1
db6f8988af46b56216a6f0daf95ab8c9bdb57400

SHA256
fcdcc2c46896915a1c695d6231f0fee336a668531b7a3da46178c80362546dba

SHA512
720e9c284f0559015312df7fe977563e5e16f48d3506e51eb4016adf7971924d352f740b030aa3adc81b6f65fd1dba12df06d10fa6c115074e5097e7ee0f08b3

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

Filesize
525KB

MD5
3050f4e4954811a6c0b01a429706a4f7

SHA1
b45715196d8302c56610cd95b2b246169391aa68

SHA256
19877426654096d35fa4a46656f35207fa19b3657c50c284cf601332243b9199

SHA512
a2c45736c6b71cfcdf78bc7e840a17428ad5f1e23167bf7dbef48289317e93580c46ec65b6e8d7ded625f4d1024498ac2fd908cb2b47c15aa7fa6fcb74d69130

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

Filesize
211B

MD5
ecfb8bbd2089f4b25ff6ed7ad46b75a9

SHA1
3c02d9b41562f1f298b54ee43795ff19cded5481

SHA256
d8cde60c69544dd2c34408ba17f1703e3e7429e7c0257a3b37411633bfffb029

SHA512
b7727d9b0c3626c115fa2aa10dff860d898951d1396b1ecf8df2dc7114991e39d29619fa8f492514ceeb8195f3b3b9943754be13d14a4008475a07458aa4376c

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

Filesize
57KB

MD5
454501a66ad6e85175a6757573d79f8b

SHA1
8ca96c61f26a640a5b1b1152d055260b9d43e308

SHA256
7fd4f35aff4a0d4bfaae3a5dfb14b94934276df0e96d1a417a8f3693915e72c8

SHA512
9dc3b9a9b7e661acc3ac9a0ff4fd764097fc41ccbc2e7969cae9805cc693a87e8255e459ea5f315271825e7e517a46649acc8d42122a8018264cc3f2efa34fb7

Download Submit
memory/2096-27-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2096-28-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2096-24-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2096-20-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2096-23-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2696-34-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2696-32-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2696-35-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/3172-2-0x0000000074A00000-0x0000000074FB1000-memory.dmp

Filesize
5.7MB

Download
memory/3172-0-0x0000000074A02000-0x0000000074A03000-memory.dmp

Filesize
4KB

Download
memory/3172-30-0x0000000074A00000-0x0000000074FB1000-memory.dmp

Filesize
5.7MB

Download
memory/3172-1-0x0000000074A00000-0x0000000074FB1000-memory.dmp

Filesize
5.7MB

Download
memory/3860-17-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/3860-11-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/3860-36-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download