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 3 IoCs

resource	yara_rule
behavioral2/memory/3408-5-0x0000000000400000-0x0000000000435000-memory.dmp	family_isrstealer
behavioral2/memory/3408-9-0x0000000000400000-0x0000000000435000-memory.dmp	family_isrstealer
behavioral2/memory/3408-44-0x0000000000400000-0x0000000000435000-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

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-523280732-2327480845-3730041215-1000\Control Panel\International\Geo\Nation	c9675564c4208ac7865611eff2e48f11_JaffaCakes118.exe

Executes dropped EXE 3 IoCs

pid	Process
3408	svchost.exe
1140	svchost.exe
4164	YouBoosterPROEditionCracked.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 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1140-13-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1140-19-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1140-17-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1140-16-0x0000000000400000-0x0000000000453000-memory.dmp	upx

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-523280732-2327480845-3730041215-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\YouBooster = "C:\\Users\\Admin\\AppData\\Local\\Temp\\YouBooster.exe"	c9675564c4208ac7865611eff2e48f11_JaffaCakes118.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4512 set thread context of 3408	4512	c9675564c4208ac7865611eff2e48f11_JaffaCakes118.exe	84
PID 3408 set thread context of 1140	3408	svchost.exe	85

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

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

description	pid	Process
Token: SeDebugPrivilege	4512	c9675564c4208ac7865611eff2e48f11_JaffaCakes118.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3408	svchost.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 4512 wrote to memory of 3408	4512	c9675564c4208ac7865611eff2e48f11_JaffaCakes118.exe	84
PID 4512 wrote to memory of 3408	4512	c9675564c4208ac7865611eff2e48f11_JaffaCakes118.exe	84
PID 4512 wrote to memory of 3408	4512	c9675564c4208ac7865611eff2e48f11_JaffaCakes118.exe	84
PID 4512 wrote to memory of 3408	4512	c9675564c4208ac7865611eff2e48f11_JaffaCakes118.exe	84
PID 4512 wrote to memory of 3408	4512	c9675564c4208ac7865611eff2e48f11_JaffaCakes118.exe	84
PID 4512 wrote to memory of 3408	4512	c9675564c4208ac7865611eff2e48f11_JaffaCakes118.exe	84
PID 4512 wrote to memory of 3408	4512	c9675564c4208ac7865611eff2e48f11_JaffaCakes118.exe	84
PID 4512 wrote to memory of 3408	4512	c9675564c4208ac7865611eff2e48f11_JaffaCakes118.exe	84
PID 3408 wrote to memory of 1140	3408	svchost.exe	85
PID 3408 wrote to memory of 1140	3408	svchost.exe	85
PID 3408 wrote to memory of 1140	3408	svchost.exe	85
PID 3408 wrote to memory of 1140	3408	svchost.exe	85
PID 3408 wrote to memory of 1140	3408	svchost.exe	85
PID 3408 wrote to memory of 1140	3408	svchost.exe	85
PID 3408 wrote to memory of 1140	3408	svchost.exe	85
PID 3408 wrote to memory of 1140	3408	svchost.exe	85
PID 4512 wrote to memory of 4164	4512	c9675564c4208ac7865611eff2e48f11_JaffaCakes118.exe	88
PID 4512 wrote to memory of 4164	4512	c9675564c4208ac7865611eff2e48f11_JaffaCakes118.exe	88
PID 4512 wrote to memory of 4164	4512	c9675564c4208ac7865611eff2e48f11_JaffaCakes118.exe	88

C:\Users\Admin\AppData\Local\Temp\c9675564c4208ac7865611eff2e48f11_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\c9675564c4208ac7865611eff2e48f11_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- 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:4512
- C:\Users\Admin\AppData\Local\Temp\svchost.exe
  C:\Users\Admin\AppData\Local\Temp\svchost.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3408
- - C:\Users\Admin\AppData\Local\Temp\svchost.exe
    /scomma "C:\Users\Admin\AppData\Local\Temp\qnMsJvcNG2.ini"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:1140
- 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:4164

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

Query Registry

1

T1012

System Information Discovery

2

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\YouBoosterPROEditionCracked.exe

Filesize
1.9MB

MD5
9a8dd627ad6b86cb468b62d778f92a64

SHA1
1c61ad812805c7f0eab4c7d60849505adc96780c

SHA256
8c59d2066c15a00e262a391c7bc50d97abfcd9b5980ed818c7a4f6486071a93f

SHA512
f0d5363b313c0d856ee04b78571c64490da4c7f3ec906a1c5c6ba4d09f3f9727fb19350b2c3defe3160e2e611ed93a9acc0c51c540549c7de6d1fcc276443a0b

Download Submit
C:\Users\Admin\AppData\Local\Temp\qnMsJvcNG2.ini

Filesize
5B

MD5
d1ea279fb5559c020a1b4137dc4de237

SHA1
db6f8988af46b56216a6f0daf95ab8c9bdb57400

SHA256
fcdcc2c46896915a1c695d6231f0fee336a668531b7a3da46178c80362546dba

SHA512
720e9c284f0559015312df7fe977563e5e16f48d3506e51eb4016adf7971924d352f740b030aa3adc81b6f65fd1dba12df06d10fa6c115074e5097e7ee0f08b3

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

Filesize
34KB

MD5
e118330b4629b12368d91b9df6488be0

SHA1
ce90218c7e3b90df2a3409ec253048bb6472c2fd

SHA256
3a0f2936b8c45e8ba3458d69d7859a63844469e698652e15fb56639d32f40cc9

SHA512
ac91c04cb20223dbaaf594440cb778dff36e857921be427c8528ba4c6cdb3e8bf8e71e1ae8af7bde9c04ff5b97b379231625bc1a2b66aba2f98cd340cd8a94b0

Download Submit
memory/1140-13-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1140-19-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1140-17-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1140-16-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3408-44-0x0000000000400000-0x0000000000435000-memory.dmp

Filesize
212KB

Download
memory/3408-5-0x0000000000400000-0x0000000000435000-memory.dmp

Filesize
212KB

Download
memory/3408-9-0x0000000000400000-0x0000000000435000-memory.dmp

Filesize
212KB

Download
memory/4164-35-0x0000000071FCE000-0x0000000071FCF000-memory.dmp

Filesize
4KB

Download
memory/4164-40-0x0000000005870000-0x000000000587A000-memory.dmp

Filesize
40KB

Download
memory/4164-47-0x0000000071FC0000-0x0000000072770000-memory.dmp

Filesize
7.7MB

Download
memory/4164-36-0x0000000000D40000-0x0000000000F22000-memory.dmp

Filesize
1.9MB

Download
memory/4164-37-0x00000000057C0000-0x000000000585C000-memory.dmp

Filesize
624KB

Download
memory/4164-38-0x0000000005E10000-0x00000000063B4000-memory.dmp

Filesize
5.6MB

Download
memory/4164-39-0x0000000005900000-0x0000000005992000-memory.dmp

Filesize
584KB

Download
memory/4164-46-0x0000000071FCE000-0x0000000071FCF000-memory.dmp

Filesize
4KB

Download
memory/4164-41-0x0000000071FC0000-0x0000000072770000-memory.dmp

Filesize
7.7MB

Download
memory/4164-42-0x0000000005AD0000-0x0000000005B26000-memory.dmp

Filesize
344KB

Download
memory/4512-2-0x00000000752C0000-0x0000000075871000-memory.dmp

Filesize
5.7MB

Download
memory/4512-1-0x00000000752C0000-0x0000000075871000-memory.dmp

Filesize
5.7MB

Download
memory/4512-34-0x00000000752C0000-0x0000000075871000-memory.dmp

Filesize
5.7MB

Download
memory/4512-0-0x00000000752C2000-0x00000000752C3000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads