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 4 IoCs

Processes:

resource	yara_rule
behavioral1/memory/3024-15-0x0000000000400000-0x0000000000435000-memory.dmp	family_isrstealer
behavioral1/memory/3024-11-0x0000000000400000-0x0000000000435000-memory.dmp	family_isrstealer
behavioral1/memory/3024-24-0x0000000000400000-0x0000000000435000-memory.dmp	family_isrstealer
behavioral1/memory/3024-33-0x0000000000400000-0x0000000000435000-memory.dmp	family_isrstealer

Executes dropped EXE 2 IoCs

Processes:

vbc.exevbc.exe

pid process

3024 vbc.exe
2408 vbc.exe
Loads dropped DLL 2 IoCs

Processes:

123ead4a0cba2ca67d621f835011e12f_JaffaCakes118.exevbc.exe

pid process

2180 123ead4a0cba2ca67d621f835011e12f_JaffaCakes118.exe
3024 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
3024	vbc.exe
2408	vbc.exe

pid	process
2180	123ead4a0cba2ca67d621f835011e12f_JaffaCakes118.exe
3024	vbc.exe

UPX packed file 6 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/2408-28-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2408-29-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2408-30-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2408-31-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2408-25-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2408-36-0x0000000000400000-0x0000000000453000-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 2180 set thread context of 3024	2180	123ead4a0cba2ca67d621f835011e12f_JaffaCakes118.exe	vbc.exe
PID 3024 set thread context of 2408	3024	vbc.exe	vbc.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

123ead4a0cba2ca67d621f835011e12f_JaffaCakes118.exe

pid process

2180 123ead4a0cba2ca67d621f835011e12f_JaffaCakes118.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

123ead4a0cba2ca67d621f835011e12f_JaffaCakes118.exe

description pid process

Token: SeDebugPrivilege 2180 123ead4a0cba2ca67d621f835011e12f_JaffaCakes118.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

vbc.exe

pid process

3024 vbc.exe

pid	process
2180	123ead4a0cba2ca67d621f835011e12f_JaffaCakes118.exe

description	pid	process
Token: SeDebugPrivilege	2180	123ead4a0cba2ca67d621f835011e12f_JaffaCakes118.exe

pid	process
3024	vbc.exe

Suspicious use of WriteProcessMemory 17 IoCs

Processes:

123ead4a0cba2ca67d621f835011e12f_JaffaCakes118.exevbc.exe

description	pid	process	target process
PID 2180 wrote to memory of 3024	2180	123ead4a0cba2ca67d621f835011e12f_JaffaCakes118.exe	vbc.exe
PID 2180 wrote to memory of 3024	2180	123ead4a0cba2ca67d621f835011e12f_JaffaCakes118.exe	vbc.exe
PID 2180 wrote to memory of 3024	2180	123ead4a0cba2ca67d621f835011e12f_JaffaCakes118.exe	vbc.exe
PID 2180 wrote to memory of 3024	2180	123ead4a0cba2ca67d621f835011e12f_JaffaCakes118.exe	vbc.exe
PID 2180 wrote to memory of 3024	2180	123ead4a0cba2ca67d621f835011e12f_JaffaCakes118.exe	vbc.exe
PID 2180 wrote to memory of 3024	2180	123ead4a0cba2ca67d621f835011e12f_JaffaCakes118.exe	vbc.exe
PID 2180 wrote to memory of 3024	2180	123ead4a0cba2ca67d621f835011e12f_JaffaCakes118.exe	vbc.exe
PID 2180 wrote to memory of 3024	2180	123ead4a0cba2ca67d621f835011e12f_JaffaCakes118.exe	vbc.exe
PID 3024 wrote to memory of 2408	3024	vbc.exe	vbc.exe
PID 3024 wrote to memory of 2408	3024	vbc.exe	vbc.exe
PID 3024 wrote to memory of 2408	3024	vbc.exe	vbc.exe
PID 3024 wrote to memory of 2408	3024	vbc.exe	vbc.exe
PID 3024 wrote to memory of 2408	3024	vbc.exe	vbc.exe
PID 3024 wrote to memory of 2408	3024	vbc.exe	vbc.exe
PID 3024 wrote to memory of 2408	3024	vbc.exe	vbc.exe
PID 3024 wrote to memory of 2408	3024	vbc.exe	vbc.exe
PID 3024 wrote to memory of 2408	3024	vbc.exe	vbc.exe

C:\Users\Admin\AppData\Local\Temp\123ead4a0cba2ca67d621f835011e12f_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\123ead4a0cba2ca67d621f835011e12f_JaffaCakes118.exe"
1⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2180
- C:\Users\Admin\AppData\Local\Temp\vbc.exe
  C:\Users\Admin\AppData\Local\Temp\vbc.exe
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3024
- - C:\Users\Admin\AppData\Local\Temp\vbc.exe
    /scomma "C:\Users\Admin\AppData\Local\Temp\CFRHC112b2.ini"
    3⤵
    - Executes dropped EXE
    PID:2408

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

\Users\Admin\AppData\Local\Temp\vbc.exe

Filesize
1.1MB

MD5
34aa912defa18c2c129f1e09d75c1d7e

SHA1
9c3046324657505a30ecd9b1fdb46c05bde7d470

SHA256
6df94b7fa33f1b87142adc39b3db0613fc520d9e7a5fd6a5301dd7f51f8d0386

SHA512
d1ea9368f5d7166180612fd763c87afb647d088498887961f5e7fb0a10f4a808bd5928e8a3666d70ff794093c51ecca8816f75dd47652fd4eb23dce7f9aa1f98

Download Submit
memory/2180-1-0x0000000074B70000-0x000000007511B000-memory.dmp

Filesize
5.7MB

Download
memory/2180-2-0x0000000074B70000-0x000000007511B000-memory.dmp

Filesize
5.7MB

Download
memory/2180-0-0x0000000074B71000-0x0000000074B72000-memory.dmp

Filesize
4KB

Download
memory/2180-18-0x0000000074B70000-0x000000007511B000-memory.dmp

Filesize
5.7MB

Download
memory/2408-28-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2408-36-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2408-25-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2408-31-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2408-30-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2408-29-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3024-9-0x0000000000400000-0x0000000000435000-memory.dmp

Filesize
212KB

Download
memory/3024-24-0x0000000000400000-0x0000000000435000-memory.dmp

Filesize
212KB

Download
memory/3024-7-0x0000000000400000-0x0000000000435000-memory.dmp

Filesize
212KB

Download
memory/3024-11-0x0000000000400000-0x0000000000435000-memory.dmp

Filesize
212KB

Download
memory/3024-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/3024-33-0x0000000000400000-0x0000000000435000-memory.dmp

Filesize
212KB

Download
memory/3024-15-0x0000000000400000-0x0000000000435000-memory.dmp

Filesize
212KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads