isrstealer | 9514c96ca877e13960c07ba58f54091df835f1f5b4135c16f9dc4cd78928c85c

General

Target

123ead4a0cba2ca67d621f835011e12f_JaffaCakes118.exe
Size

351KB
MD5

123ead4a0cba2ca67d621f835011e12f
SHA1

d28b7f8946faaebe82ce8cc36cce0df640a2c5b5
SHA256

9514c96ca877e13960c07ba58f54091df835f1f5b4135c16f9dc4cd78928c85c
SHA512

7c8413d165b74ba39c4272ca4dc851d8ceb837eaa251aaf41d66ab43fc7b8bd606a0da0469b533a14ff0b34c55fc87dc8c619c629bd18926ddd82660baae0299
SSDEEP

6144:VpQz6Vc6iK52P9osBDxioZPo35ruomQ2m1XrP1Dnoez844Y2nm7zHQD1vxSN:V6QniK5SBEzsI3BrP1bHg4HNPwRvc

Score

10^/10

isrstealer 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

Processes:

resource	yara_rule
behavioral2/memory/2312-5-0x0000000000400000-0x0000000000435000-memory.dmp	family_isrstealer
behavioral2/memory/2312-10-0x0000000000400000-0x0000000000435000-memory.dmp	family_isrstealer
behavioral2/memory/2312-27-0x0000000000400000-0x0000000000435000-memory.dmp	family_isrstealer

Executes dropped EXE 2 IoCs

Processes:

vbc.exevbc.exe

pid process

2312 vbc.exe
4804 vbc.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

pid	process
2312	vbc.exe
4804	vbc.exe

UPX packed file 5 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/4804-17-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4804-16-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4804-21-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4804-20-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4804-13-0x0000000000400000-0x0000000000453000-memory.dmp	upx

Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

Suspicious use of SetThreadContext 2 IoCs

Processes:

123ead4a0cba2ca67d621f835011e12f_JaffaCakes118.exevbc.exe

description	pid	process	target process
PID 2484 set thread context of 2312	2484	123ead4a0cba2ca67d621f835011e12f_JaffaCakes118.exe	vbc.exe
PID 2312 set thread context of 4804	2312	vbc.exe	vbc.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

123ead4a0cba2ca67d621f835011e12f_JaffaCakes118.exe

pid process

2484 123ead4a0cba2ca67d621f835011e12f_JaffaCakes118.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

123ead4a0cba2ca67d621f835011e12f_JaffaCakes118.exe

description pid process

Token: SeDebugPrivilege 2484 123ead4a0cba2ca67d621f835011e12f_JaffaCakes118.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

vbc.exe

pid process

2312 vbc.exe

pid	process
2484	123ead4a0cba2ca67d621f835011e12f_JaffaCakes118.exe

description	pid	process
Token: SeDebugPrivilege	2484	123ead4a0cba2ca67d621f835011e12f_JaffaCakes118.exe

pid	process
2312	vbc.exe

Suspicious use of WriteProcessMemory 16 IoCs

Processes:

123ead4a0cba2ca67d621f835011e12f_JaffaCakes118.exevbc.exe

description	pid	process	target process
PID 2484 wrote to memory of 2312	2484	123ead4a0cba2ca67d621f835011e12f_JaffaCakes118.exe	vbc.exe
PID 2484 wrote to memory of 2312	2484	123ead4a0cba2ca67d621f835011e12f_JaffaCakes118.exe	vbc.exe
PID 2484 wrote to memory of 2312	2484	123ead4a0cba2ca67d621f835011e12f_JaffaCakes118.exe	vbc.exe
PID 2484 wrote to memory of 2312	2484	123ead4a0cba2ca67d621f835011e12f_JaffaCakes118.exe	vbc.exe
PID 2484 wrote to memory of 2312	2484	123ead4a0cba2ca67d621f835011e12f_JaffaCakes118.exe	vbc.exe
PID 2484 wrote to memory of 2312	2484	123ead4a0cba2ca67d621f835011e12f_JaffaCakes118.exe	vbc.exe
PID 2484 wrote to memory of 2312	2484	123ead4a0cba2ca67d621f835011e12f_JaffaCakes118.exe	vbc.exe
PID 2484 wrote to memory of 2312	2484	123ead4a0cba2ca67d621f835011e12f_JaffaCakes118.exe	vbc.exe
PID 2312 wrote to memory of 4804	2312	vbc.exe	vbc.exe
PID 2312 wrote to memory of 4804	2312	vbc.exe	vbc.exe
PID 2312 wrote to memory of 4804	2312	vbc.exe	vbc.exe
PID 2312 wrote to memory of 4804	2312	vbc.exe	vbc.exe
PID 2312 wrote to memory of 4804	2312	vbc.exe	vbc.exe
PID 2312 wrote to memory of 4804	2312	vbc.exe	vbc.exe
PID 2312 wrote to memory of 4804	2312	vbc.exe	vbc.exe
PID 2312 wrote to memory of 4804	2312	vbc.exe	vbc.exe

C:\Users\Admin\AppData\Local\Temp\123ead4a0cba2ca67d621f835011e12f_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\123ead4a0cba2ca67d621f835011e12f_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2484
- C:\Users\Admin\AppData\Local\Temp\vbc.exe
  C:\Users\Admin\AppData\Local\Temp\vbc.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2312
- - C:\Users\Admin\AppData\Local\Temp\vbc.exe
    /scomma "C:\Users\Admin\AppData\Local\Temp\Ft4h1MYkW6.ini"
    3⤵
    - Executes dropped EXE
    PID:4804

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scripting

1

T1064

Persistence

Privilege Escalation

Defense Evasion

Scripting

1

T1064

Credential Access

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

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\Ft4h1MYkW6.ini

Filesize
5B

MD5
d1ea279fb5559c020a1b4137dc4de237

SHA1
db6f8988af46b56216a6f0daf95ab8c9bdb57400

SHA256
fcdcc2c46896915a1c695d6231f0fee336a668531b7a3da46178c80362546dba

SHA512
720e9c284f0559015312df7fe977563e5e16f48d3506e51eb4016adf7971924d352f740b030aa3adc81b6f65fd1dba12df06d10fa6c115074e5097e7ee0f08b3

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

Filesize
1.1MB

MD5
d881de17aa8f2e2c08cbb7b265f928f9

SHA1
08936aebc87decf0af6e8eada191062b5e65ac2a

SHA256
b3a37093609f9a20ad60b85a9fa9de2ba674cba9b5bd687729440c70ba619ca0

SHA512
5f23bfb1b8740247b36ed0ab741738c7d4c949736129e767213e321607d1ccd3e3a8428e4ba44bd28a275b5e3f6206285b1a522514b7ef7ea5e698d90a713d34

Download Submit
memory/2312-5-0x0000000000400000-0x0000000000435000-memory.dmp

Filesize
212KB

Download
memory/2312-10-0x0000000000400000-0x0000000000435000-memory.dmp

Filesize
212KB

Download
memory/2312-27-0x0000000000400000-0x0000000000435000-memory.dmp

Filesize
212KB

Download
memory/2312-25-0x0000000000440000-0x0000000000509000-memory.dmp

Filesize
804KB

Download
memory/2484-23-0x0000000075390000-0x0000000075941000-memory.dmp

Filesize
5.7MB

Download
memory/2484-1-0x0000000075390000-0x0000000075941000-memory.dmp

Filesize
5.7MB

Download
memory/2484-2-0x0000000075390000-0x0000000075941000-memory.dmp

Filesize
5.7MB

Download
memory/2484-0-0x0000000075392000-0x0000000075393000-memory.dmp

Filesize
4KB

Download
memory/4804-17-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4804-13-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4804-20-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4804-21-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4804-16-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads