isrstealer | 674b204d76fde06ea2af8d8f61a915229e685c505dadd045868624bb0a791811

General

Target

c9675564c4208ac7865611eff2e48f11_JaffaCakes118.exe
Size

2.2MB
MD5

c9675564c4208ac7865611eff2e48f11
SHA1

2f9b16299dc1fdd4751915361a4cd6225267d99d
SHA256

674b204d76fde06ea2af8d8f61a915229e685c505dadd045868624bb0a791811
SHA512

e8a90d87f4ac7d583f1051b0761ef8e931ac4b42ed0f38a517ca304bc86cd9626a9ef3b4ace46e1506b9015937f4ad280111ffd9a9bbf7e08e196d5fed84fe86
SSDEEP

24576:hUzebIo7Q3DFuuL1LXEXkX1TzEVhdOPWtslFP+rZSba+fwZoQ+R:hfIoQ3DFuGLXEXkXFzEndJePQMr4Zov

Score

10^/10

isrstealer credential_access discovery persistence 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

Processes:

resource	yara_rule
behavioral1/memory/2240-14-0x0000000000400000-0x0000000000435000-memory.dmp	family_isrstealer
behavioral1/memory/2240-11-0x0000000000400000-0x0000000000435000-memory.dmp	family_isrstealer
behavioral1/memory/2240-27-0x0000000000400000-0x0000000000435000-memory.dmp	family_isrstealer
behavioral1/memory/2240-47-0x0000000000400000-0x0000000000435000-memory.dmp	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

Executes dropped EXE 3 IoCs

Processes:

svchost.exesvchost.exeYouBoosterPROEditionCracked.exe

pid	Process
2240	svchost.exe
2148	svchost.exe
3008	YouBoosterPROEditionCracked.exe

Loads dropped DLL 3 IoCs

Processes:

c9675564c4208ac7865611eff2e48f11_JaffaCakes118.exesvchost.exe

pid	Process
1684	c9675564c4208ac7865611eff2e48f11_JaffaCakes118.exe
2240	svchost.exe
1684	c9675564c4208ac7865611eff2e48f11_JaffaCakes118.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 5 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/2148-33-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2148-32-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2148-31-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2148-28-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2148-44-0x0000000000400000-0x0000000000453000-memory.dmp	upx

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

c9675564c4208ac7865611eff2e48f11_JaffaCakes118.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2212144002-1172735686-1556890956-1000\Software\Microsoft\Windows\CurrentVersion\Run\YouBooster = "C:\\Users\\Admin\\AppData\\Local\\Temp\\YouBooster.exe"	c9675564c4208ac7865611eff2e48f11_JaffaCakes118.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

c9675564c4208ac7865611eff2e48f11_JaffaCakes118.exesvchost.exe

description	pid	Process	procid_target
PID 1684 set thread context of 2240	1684	c9675564c4208ac7865611eff2e48f11_JaffaCakes118.exe	30
PID 2240 set thread context of 2148	2240	svchost.exe	31

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:

svchost.exeYouBoosterPROEditionCracked.exec9675564c4208ac7865611eff2e48f11_JaffaCakes118.exesvchost.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	YouBoosterPROEditionCracked.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	c9675564c4208ac7865611eff2e48f11_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

c9675564c4208ac7865611eff2e48f11_JaffaCakes118.exe

description	pid	Process
Token: SeDebugPrivilege	1684	c9675564c4208ac7865611eff2e48f11_JaffaCakes118.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

svchost.exe

pid	Process
2240	svchost.exe

Suspicious use of WriteProcessMemory 21 IoCs

Processes:

c9675564c4208ac7865611eff2e48f11_JaffaCakes118.exesvchost.exe

description	pid	Process	procid_target
PID 1684 wrote to memory of 2240	1684	c9675564c4208ac7865611eff2e48f11_JaffaCakes118.exe	30
PID 1684 wrote to memory of 2240	1684	c9675564c4208ac7865611eff2e48f11_JaffaCakes118.exe	30
PID 1684 wrote to memory of 2240	1684	c9675564c4208ac7865611eff2e48f11_JaffaCakes118.exe	30
PID 1684 wrote to memory of 2240	1684	c9675564c4208ac7865611eff2e48f11_JaffaCakes118.exe	30
PID 1684 wrote to memory of 2240	1684	c9675564c4208ac7865611eff2e48f11_JaffaCakes118.exe	30
PID 1684 wrote to memory of 2240	1684	c9675564c4208ac7865611eff2e48f11_JaffaCakes118.exe	30
PID 1684 wrote to memory of 2240	1684	c9675564c4208ac7865611eff2e48f11_JaffaCakes118.exe	30
PID 1684 wrote to memory of 2240	1684	c9675564c4208ac7865611eff2e48f11_JaffaCakes118.exe	30
PID 2240 wrote to memory of 2148	2240	svchost.exe	31
PID 2240 wrote to memory of 2148	2240	svchost.exe	31
PID 2240 wrote to memory of 2148	2240	svchost.exe	31
PID 2240 wrote to memory of 2148	2240	svchost.exe	31
PID 2240 wrote to memory of 2148	2240	svchost.exe	31
PID 2240 wrote to memory of 2148	2240	svchost.exe	31
PID 2240 wrote to memory of 2148	2240	svchost.exe	31
PID 2240 wrote to memory of 2148	2240	svchost.exe	31
PID 2240 wrote to memory of 2148	2240	svchost.exe	31
PID 1684 wrote to memory of 3008	1684	c9675564c4208ac7865611eff2e48f11_JaffaCakes118.exe	32
PID 1684 wrote to memory of 3008	1684	c9675564c4208ac7865611eff2e48f11_JaffaCakes118.exe	32
PID 1684 wrote to memory of 3008	1684	c9675564c4208ac7865611eff2e48f11_JaffaCakes118.exe	32
PID 1684 wrote to memory of 3008	1684	c9675564c4208ac7865611eff2e48f11_JaffaCakes118.exe	32

C:\Users\Admin\AppData\Local\Temp\c9675564c4208ac7865611eff2e48f11_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\c9675564c4208ac7865611eff2e48f11_JaffaCakes118.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1684
- C:\Users\Admin\AppData\Local\Temp\svchost.exe
  C:\Users\Admin\AppData\Local\Temp\svchost.exe
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2240
- - C:\Users\Admin\AppData\Local\Temp\svchost.exe
    /scomma "C:\Users\Admin\AppData\Local\Temp\JRA9N2IJba.ini"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:2148
- C:\Users\Admin\AppData\Local\Temp\YouBoosterPROEditionCracked.exe
  "C:\Users\Admin\AppData\Local\Temp\YouBoosterPROEditionCracked.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:3008

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\JRA9N2IJba.ini

Filesize
5B

MD5
d1ea279fb5559c020a1b4137dc4de237

SHA1
db6f8988af46b56216a6f0daf95ab8c9bdb57400

SHA256
fcdcc2c46896915a1c695d6231f0fee336a668531b7a3da46178c80362546dba

SHA512
720e9c284f0559015312df7fe977563e5e16f48d3506e51eb4016adf7971924d352f740b030aa3adc81b6f65fd1dba12df06d10fa6c115074e5097e7ee0f08b3

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

Filesize
31KB

MD5
ed797d8dc2c92401985d162e42ffa450

SHA1
0f02fc517c7facc4baefde4fe9467fb6488ebabe

SHA256
b746362010a101cb5931bc066f0f4d3fc740c02a68c1f37fc3c8e6c87fd7cb1e

SHA512
e831a6ff987f3ef29982da16afad06938b68eddd43c234ba88d1c96a1b5547f2284baf35cbb3a5bfd75e7f0445d14daa014e0ba00b4db72c67f83f0a314c80c2

Download Submit
\Users\Admin\AppData\Local\Temp\YouBoosterPROEditionCracked.exe

Filesize
1.9MB

MD5
9a8dd627ad6b86cb468b62d778f92a64

SHA1
1c61ad812805c7f0eab4c7d60849505adc96780c

SHA256
8c59d2066c15a00e262a391c7bc50d97abfcd9b5980ed818c7a4f6486071a93f

SHA512
f0d5363b313c0d856ee04b78571c64490da4c7f3ec906a1c5c6ba4d09f3f9727fb19350b2c3defe3160e2e611ed93a9acc0c51c540549c7de6d1fcc276443a0b

Download Submit
memory/1684-0-0x0000000074E21000-0x0000000074E22000-memory.dmp

Filesize
4KB

Download
memory/1684-1-0x0000000074E20000-0x00000000753CB000-memory.dmp

Filesize
5.7MB

Download
memory/1684-2-0x0000000074E20000-0x00000000753CB000-memory.dmp

Filesize
5.7MB

Download
memory/1684-41-0x0000000074E20000-0x00000000753CB000-memory.dmp

Filesize
5.7MB

Download
memory/2148-32-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2148-33-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2148-31-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2148-28-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2148-44-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2240-9-0x0000000000400000-0x0000000000435000-memory.dmp

Filesize
212KB

Download
memory/2240-11-0x0000000000400000-0x0000000000435000-memory.dmp

Filesize
212KB

Download
memory/2240-27-0x0000000000400000-0x0000000000435000-memory.dmp

Filesize
212KB

Download
memory/2240-12-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2240-14-0x0000000000400000-0x0000000000435000-memory.dmp

Filesize
212KB

Download
memory/2240-7-0x0000000000400000-0x0000000000435000-memory.dmp

Filesize
212KB

Download
memory/2240-47-0x0000000000400000-0x0000000000435000-memory.dmp

Filesize
212KB

Download
memory/3008-42-0x00000000008E0000-0x0000000000AC2000-memory.dmp

Filesize
1.9MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads