isrstealer | 49f391724c3ba628badd050006b8fa3cb8132367c179ef90d72ae897390a209d

General

Target

6312ed9ae5dbf870786130b0c364595b_JaffaCakes118.exe
Size

244KB
MD5

6312ed9ae5dbf870786130b0c364595b
SHA1

10d967bb99bd21dd3631b897c42e9298fbb73335
SHA256

49f391724c3ba628badd050006b8fa3cb8132367c179ef90d72ae897390a209d
SHA512

82ae98e1d850d535cefb5d946c3c4f308eb97ef913a1f19f754aa17531d5d2adbefdcaade88e37b7a8971c1402a6a51d58fecda8b412efb9251b49590cd67552
SSDEEP

3072:NZkNG7wB9Q+Cp6WpxoiemvVLi/g5s0zIhVpmy+GPSfqpEEgccmZ9SyY4oZqEEK9n:LOhqzXoixxi/gfIhl+GP7ugcmGUQmTaN

Score

10^/10

isrstealer discovery 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/4404-4-0x0000000000400000-0x0000000000435000-memory.dmp	family_isrstealer
behavioral2/memory/4404-6-0x0000000000400000-0x0000000000435000-memory.dmp	family_isrstealer
behavioral2/memory/4404-19-0x0000000000400000-0x0000000000435000-memory.dmp	family_isrstealer

Reads user/profile data of web browsers 3 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

Credentials from Web Browsers
T1555.003

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 724 set thread context of 4404	724	6312ed9ae5dbf870786130b0c364595b_JaffaCakes118.exe	84
PID 4404 set thread context of 3172	4404	6312ed9ae5dbf870786130b0c364595b_JaffaCakes118.exe	85

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3172-10-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3172-12-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3172-14-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3172-13-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3172-16-0x0000000000400000-0x0000000000453000-memory.dmp	upx

System Location Discovery: System Language Discovery 1 TTPs 3 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	6312ed9ae5dbf870786130b0c364595b_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	6312ed9ae5dbf870786130b0c364595b_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	6312ed9ae5dbf870786130b0c364595b_JaffaCakes118.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
724	6312ed9ae5dbf870786130b0c364595b_JaffaCakes118.exe
4404	6312ed9ae5dbf870786130b0c364595b_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 724 wrote to memory of 4404	724	6312ed9ae5dbf870786130b0c364595b_JaffaCakes118.exe	84
PID 724 wrote to memory of 4404	724	6312ed9ae5dbf870786130b0c364595b_JaffaCakes118.exe	84
PID 724 wrote to memory of 4404	724	6312ed9ae5dbf870786130b0c364595b_JaffaCakes118.exe	84
PID 724 wrote to memory of 4404	724	6312ed9ae5dbf870786130b0c364595b_JaffaCakes118.exe	84
PID 724 wrote to memory of 4404	724	6312ed9ae5dbf870786130b0c364595b_JaffaCakes118.exe	84
PID 724 wrote to memory of 4404	724	6312ed9ae5dbf870786130b0c364595b_JaffaCakes118.exe	84
PID 724 wrote to memory of 4404	724	6312ed9ae5dbf870786130b0c364595b_JaffaCakes118.exe	84
PID 724 wrote to memory of 4404	724	6312ed9ae5dbf870786130b0c364595b_JaffaCakes118.exe	84
PID 4404 wrote to memory of 3172	4404	6312ed9ae5dbf870786130b0c364595b_JaffaCakes118.exe	85
PID 4404 wrote to memory of 3172	4404	6312ed9ae5dbf870786130b0c364595b_JaffaCakes118.exe	85
PID 4404 wrote to memory of 3172	4404	6312ed9ae5dbf870786130b0c364595b_JaffaCakes118.exe	85
PID 4404 wrote to memory of 3172	4404	6312ed9ae5dbf870786130b0c364595b_JaffaCakes118.exe	85
PID 4404 wrote to memory of 3172	4404	6312ed9ae5dbf870786130b0c364595b_JaffaCakes118.exe	85
PID 4404 wrote to memory of 3172	4404	6312ed9ae5dbf870786130b0c364595b_JaffaCakes118.exe	85
PID 4404 wrote to memory of 3172	4404	6312ed9ae5dbf870786130b0c364595b_JaffaCakes118.exe	85
PID 4404 wrote to memory of 3172	4404	6312ed9ae5dbf870786130b0c364595b_JaffaCakes118.exe	85

C:\Users\Admin\AppData\Local\Temp\6312ed9ae5dbf870786130b0c364595b_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\6312ed9ae5dbf870786130b0c364595b_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:724
- C:\Users\Admin\AppData\Local\Temp\6312ed9ae5dbf870786130b0c364595b_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\6312ed9ae5dbf870786130b0c364595b_JaffaCakes118.exe
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4404
- - C:\Users\Admin\AppData\Local\Temp\6312ed9ae5dbf870786130b0c364595b_JaffaCakes118.exe
    /scomma "C:\Users\Admin\AppData\Local\Temp\gtB2xalXtm.ini"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:3172

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

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 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\gtB2xalXtm.ini

Filesize
5B

MD5
d1ea279fb5559c020a1b4137dc4de237

SHA1
db6f8988af46b56216a6f0daf95ab8c9bdb57400

SHA256
fcdcc2c46896915a1c695d6231f0fee336a668531b7a3da46178c80362546dba

SHA512
720e9c284f0559015312df7fe977563e5e16f48d3506e51eb4016adf7971924d352f740b030aa3adc81b6f65fd1dba12df06d10fa6c115074e5097e7ee0f08b3

Download Submit
memory/724-0-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/724-7-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/3172-10-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3172-12-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3172-14-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3172-13-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3172-16-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4404-4-0x0000000000400000-0x0000000000435000-memory.dmp

Filesize
212KB

Download
memory/4404-6-0x0000000000400000-0x0000000000435000-memory.dmp

Filesize
212KB

Download
memory/4404-19-0x0000000000400000-0x0000000000435000-memory.dmp

Filesize
212KB

Download

Analysis

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