isrstealer | 19877426654096d35fa4a46656f35207fa19b3657c50c284cf601332243b9199

Analysis

max time kernel
119s
max time network
125s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-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 4 IoCs

resource	yara_rule
behavioral1/memory/2532-16-0x0000000000400000-0x0000000000442000-memory.dmp	family_isrstealer
behavioral1/memory/2532-13-0x0000000000400000-0x0000000000442000-memory.dmp	family_isrstealer
behavioral1/memory/2532-31-0x0000000000400000-0x0000000000442000-memory.dmp	family_isrstealer
behavioral1/memory/2532-48-0x0000000000400000-0x0000000000442000-memory.dmp	family_isrstealer

NirSoft MailPassView 1 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral1/memory/564-47-0x0000000000400000-0x000000000041F000-memory.dmp	MailPassView

Nirsoft 1 IoCs

resource	yara_rule
behavioral1/memory/564-47-0x0000000000400000-0x000000000041F000-memory.dmp	Nirsoft

Executes dropped EXE 3 IoCs

pid	Process
2532	svhost.exe
2448	svhost.exe
564	svhost.exe

Loads dropped DLL 3 IoCs

pid	Process
2300	3050f4e4954811a6c0b01a429706a4f7_JaffaCakes118.exe
2532	svhost.exe
2532	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
behavioral1/memory/2448-35-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2448-36-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2448-32-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2448-37-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2448-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/564-44-0x0000000000400000-0x000000000041F000-memory.dmp	upx
behavioral1/memory/564-46-0x0000000000400000-0x000000000041F000-memory.dmp	upx
behavioral1/memory/564-47-0x0000000000400000-0x000000000041F000-memory.dmp	upx

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	svhost.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2300 set thread context of 2532	2300	3050f4e4954811a6c0b01a429706a4f7_JaffaCakes118.exe	31
PID 2532 set thread context of 2448	2532	svhost.exe	33
PID 2532 set thread context of 564	2532	svhost.exe	37

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
2200	timeout.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2300	3050f4e4954811a6c0b01a429706a4f7_JaffaCakes118.exe
2300	3050f4e4954811a6c0b01a429706a4f7_JaffaCakes118.exe
2300	3050f4e4954811a6c0b01a429706a4f7_JaffaCakes118.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2300	3050f4e4954811a6c0b01a429706a4f7_JaffaCakes118.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2532	svhost.exe

Suspicious use of WriteProcessMemory 42 IoCs

description	pid	Process	procid_target
PID 2300 wrote to memory of 2784	2300	3050f4e4954811a6c0b01a429706a4f7_JaffaCakes118.exe	28
PID 2300 wrote to memory of 2784	2300	3050f4e4954811a6c0b01a429706a4f7_JaffaCakes118.exe	28
PID 2300 wrote to memory of 2784	2300	3050f4e4954811a6c0b01a429706a4f7_JaffaCakes118.exe	28
PID 2300 wrote to memory of 2784	2300	3050f4e4954811a6c0b01a429706a4f7_JaffaCakes118.exe	28
PID 2784 wrote to memory of 2916	2784	cmd.exe	30
PID 2784 wrote to memory of 2916	2784	cmd.exe	30
PID 2784 wrote to memory of 2916	2784	cmd.exe	30
PID 2784 wrote to memory of 2916	2784	cmd.exe	30
PID 2300 wrote to memory of 2532	2300	3050f4e4954811a6c0b01a429706a4f7_JaffaCakes118.exe	31
PID 2300 wrote to memory of 2532	2300	3050f4e4954811a6c0b01a429706a4f7_JaffaCakes118.exe	31
PID 2300 wrote to memory of 2532	2300	3050f4e4954811a6c0b01a429706a4f7_JaffaCakes118.exe	31
PID 2300 wrote to memory of 2532	2300	3050f4e4954811a6c0b01a429706a4f7_JaffaCakes118.exe	31
PID 2300 wrote to memory of 2532	2300	3050f4e4954811a6c0b01a429706a4f7_JaffaCakes118.exe	31
PID 2300 wrote to memory of 2532	2300	3050f4e4954811a6c0b01a429706a4f7_JaffaCakes118.exe	31
PID 2300 wrote to memory of 2532	2300	3050f4e4954811a6c0b01a429706a4f7_JaffaCakes118.exe	31
PID 2300 wrote to memory of 2532	2300	3050f4e4954811a6c0b01a429706a4f7_JaffaCakes118.exe	31
PID 2300 wrote to memory of 2512	2300	3050f4e4954811a6c0b01a429706a4f7_JaffaCakes118.exe	32
PID 2300 wrote to memory of 2512	2300	3050f4e4954811a6c0b01a429706a4f7_JaffaCakes118.exe	32
PID 2300 wrote to memory of 2512	2300	3050f4e4954811a6c0b01a429706a4f7_JaffaCakes118.exe	32
PID 2300 wrote to memory of 2512	2300	3050f4e4954811a6c0b01a429706a4f7_JaffaCakes118.exe	32
PID 2532 wrote to memory of 2448	2532	svhost.exe	33
PID 2532 wrote to memory of 2448	2532	svhost.exe	33
PID 2532 wrote to memory of 2448	2532	svhost.exe	33
PID 2532 wrote to memory of 2448	2532	svhost.exe	33
PID 2532 wrote to memory of 2448	2532	svhost.exe	33
PID 2532 wrote to memory of 2448	2532	svhost.exe	33
PID 2532 wrote to memory of 2448	2532	svhost.exe	33
PID 2532 wrote to memory of 2448	2532	svhost.exe	33
PID 2532 wrote to memory of 2448	2532	svhost.exe	33
PID 2512 wrote to memory of 2200	2512	cmd.exe	35
PID 2512 wrote to memory of 2200	2512	cmd.exe	35
PID 2512 wrote to memory of 2200	2512	cmd.exe	35
PID 2512 wrote to memory of 2200	2512	cmd.exe	35
PID 2532 wrote to memory of 564	2532	svhost.exe	37
PID 2532 wrote to memory of 564	2532	svhost.exe	37
PID 2532 wrote to memory of 564	2532	svhost.exe	37
PID 2532 wrote to memory of 564	2532	svhost.exe	37
PID 2532 wrote to memory of 564	2532	svhost.exe	37
PID 2532 wrote to memory of 564	2532	svhost.exe	37
PID 2532 wrote to memory of 564	2532	svhost.exe	37
PID 2532 wrote to memory of 564	2532	svhost.exe	37
PID 2532 wrote to memory of 564	2532	svhost.exe	37

C:\Users\Admin\AppData\Local\Temp\3050f4e4954811a6c0b01a429706a4f7_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\3050f4e4954811a6c0b01a429706a4f7_JaffaCakes118.exe"
1⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2300
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2784
- - 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:2916
- C:\Users\Admin\AppData\Local\Temp\svhost.exe
  "C:\Users\Admin\AppData\Local\Temp\svhost.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2532
- - C:\Users\Admin\AppData\Local\Temp\svhost.exe
    /scomma "C:\Users\Admin\AppData\Local\Temp\5Av1NKdfMp.ini"
    3⤵
    - Executes dropped EXE
    PID:2448
- - C:\Users\Admin\AppData\Local\Temp\svhost.exe
    /scomma "C:\Users\Admin\AppData\Local\Temp\0Qj4PiT7dB.ini"
    3⤵
    - Executes dropped EXE
    - Accesses Microsoft Outlook accounts
    PID:564
- C:\Windows\SysWOW64\cmd.exe
  cmd /c C:\Users\Admin\AppData\Local\Temp\GoodheaTH\GoodheaTH.exe.bat
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2512
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 300
    3⤵
    - Delays execution with timeout.exe
    PID:2200

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\5Av1NKdfMp.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
\Users\Admin\AppData\Local\Temp\svhost.exe

Filesize
54KB

MD5
0f01571a3e4c71eb4313175aae86488e

SHA1
2ba648afe2cd52edf5f25e304f77d457abf7ac0e

SHA256
8cc51c4c2efc8c6a401aa83a0aeced0925d5d9d2a43192f35561893cdf704022

SHA512
159dfbb7d385bf92f4fc48ca389b89d69f6c2616e90dfa056e725d7da78a3702694a28f9c5cab7b55adc4d4dbd7bfe5d272c8b1c9931e3ac95f6326d74576794

Download Submit
memory/564-47-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/564-46-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/564-44-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2300-0-0x00000000744D1000-0x00000000744D2000-memory.dmp

Filesize
4KB

Download
memory/2300-1-0x00000000744D0000-0x0000000074A7B000-memory.dmp

Filesize
5.7MB

Download
memory/2300-2-0x00000000744D0000-0x0000000074A7B000-memory.dmp

Filesize
5.7MB

Download
memory/2300-39-0x00000000744D0000-0x0000000074A7B000-memory.dmp

Filesize
5.7MB

Download
memory/2448-37-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2448-36-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2448-32-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2448-35-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2448-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2532-31-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/2532-11-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/2532-12-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/2532-13-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/2532-16-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/2532-14-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2532-48-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download