isrstealer | 0557b53f3dbebaf8328fbb23775f3e103427d69feb800ca41dc51f778a3d5350

General

Target

26cbf1d4d00fc15f2dc56ae470a38734_JaffaCakes118.exe
Size

269KB
MD5

26cbf1d4d00fc15f2dc56ae470a38734
SHA1

0c7879e1a8c1953a3c3588e59258bc3921650b76
SHA256

0557b53f3dbebaf8328fbb23775f3e103427d69feb800ca41dc51f778a3d5350
SHA512

a50c18e81c92a865c4579817f23afbd6a1d461b1c02220d48dce5a8169e2bbe27ce39d7523b0272c32b3e0129a7b4209af8e07f7e9a4ad790dd8b443ba83c627
SSDEEP

6144:ynz/zSibhWTuqPwfw8Pz/RDVjNV6/0SBRLMRsFC:ynVbESqPywG/RBjNV6/0SgRl

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 2 IoCs

resource	yara_rule
behavioral1/memory/2684-3-0x0000000000400000-0x0000000000435000-memory.dmp	family_isrstealer
behavioral1/memory/2684-20-0x0000000000400000-0x0000000000435000-memory.dmp	family_isrstealer

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 6 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2700-13-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2700-14-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2700-15-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2700-12-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2700-9-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2700-17-0x0000000000400000-0x0000000000453000-memory.dmp	upx

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 3024 set thread context of 2684	3024	26cbf1d4d00fc15f2dc56ae470a38734_JaffaCakes118.exe	30
PID 2684 set thread context of 2700	2684	26cbf1d4d00fc15f2dc56ae470a38734_JaffaCakes118.exe	31

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
3024	26cbf1d4d00fc15f2dc56ae470a38734_JaffaCakes118.exe
2684	26cbf1d4d00fc15f2dc56ae470a38734_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 3024 wrote to memory of 2684	3024	26cbf1d4d00fc15f2dc56ae470a38734_JaffaCakes118.exe	30
PID 3024 wrote to memory of 2684	3024	26cbf1d4d00fc15f2dc56ae470a38734_JaffaCakes118.exe	30
PID 3024 wrote to memory of 2684	3024	26cbf1d4d00fc15f2dc56ae470a38734_JaffaCakes118.exe	30
PID 3024 wrote to memory of 2684	3024	26cbf1d4d00fc15f2dc56ae470a38734_JaffaCakes118.exe	30
PID 3024 wrote to memory of 2684	3024	26cbf1d4d00fc15f2dc56ae470a38734_JaffaCakes118.exe	30
PID 3024 wrote to memory of 2684	3024	26cbf1d4d00fc15f2dc56ae470a38734_JaffaCakes118.exe	30
PID 3024 wrote to memory of 2684	3024	26cbf1d4d00fc15f2dc56ae470a38734_JaffaCakes118.exe	30
PID 3024 wrote to memory of 2684	3024	26cbf1d4d00fc15f2dc56ae470a38734_JaffaCakes118.exe	30
PID 2684 wrote to memory of 2700	2684	26cbf1d4d00fc15f2dc56ae470a38734_JaffaCakes118.exe	31
PID 2684 wrote to memory of 2700	2684	26cbf1d4d00fc15f2dc56ae470a38734_JaffaCakes118.exe	31
PID 2684 wrote to memory of 2700	2684	26cbf1d4d00fc15f2dc56ae470a38734_JaffaCakes118.exe	31
PID 2684 wrote to memory of 2700	2684	26cbf1d4d00fc15f2dc56ae470a38734_JaffaCakes118.exe	31
PID 2684 wrote to memory of 2700	2684	26cbf1d4d00fc15f2dc56ae470a38734_JaffaCakes118.exe	31
PID 2684 wrote to memory of 2700	2684	26cbf1d4d00fc15f2dc56ae470a38734_JaffaCakes118.exe	31
PID 2684 wrote to memory of 2700	2684	26cbf1d4d00fc15f2dc56ae470a38734_JaffaCakes118.exe	31
PID 2684 wrote to memory of 2700	2684	26cbf1d4d00fc15f2dc56ae470a38734_JaffaCakes118.exe	31
PID 2684 wrote to memory of 2700	2684	26cbf1d4d00fc15f2dc56ae470a38734_JaffaCakes118.exe	31

C:\Users\Admin\AppData\Local\Temp\26cbf1d4d00fc15f2dc56ae470a38734_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\26cbf1d4d00fc15f2dc56ae470a38734_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3024
- C:\Users\Admin\AppData\Local\Temp\26cbf1d4d00fc15f2dc56ae470a38734_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\26cbf1d4d00fc15f2dc56ae470a38734_JaffaCakes118.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2684
- - C:\Users\Admin\AppData\Local\Temp\26cbf1d4d00fc15f2dc56ae470a38734_JaffaCakes118.exe
    /scomma "C:\Users\Admin\AppData\Local\Temp\iTS65OreJ8.ini"
    3⤵
    PID:2700

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\iTS65OreJ8.ini

Filesize
5B

MD5
d1ea279fb5559c020a1b4137dc4de237

SHA1
db6f8988af46b56216a6f0daf95ab8c9bdb57400

SHA256
fcdcc2c46896915a1c695d6231f0fee336a668531b7a3da46178c80362546dba

SHA512
720e9c284f0559015312df7fe977563e5e16f48d3506e51eb4016adf7971924d352f740b030aa3adc81b6f65fd1dba12df06d10fa6c115074e5097e7ee0f08b3

Download Submit
memory/2684-3-0x0000000000400000-0x0000000000435000-memory.dmp

Filesize
212KB

Download
memory/2684-11-0x0000000000300000-0x0000000000335000-memory.dmp

Filesize
212KB

Download
memory/2684-20-0x0000000000400000-0x0000000000435000-memory.dmp

Filesize
212KB

Download
memory/2700-13-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2700-14-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2700-15-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2700-12-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2700-9-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2700-17-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

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

Filesize
212KB

Download
memory/3024-4-0x0000000000400000-0x0000000000435000-memory.dmp

Filesize
212KB

Download

Analysis

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