isrstealer | bd2563ad574ea93560cff3cad5c40c266c4c59f214d3f0420d6ea264914828b9

General

Target

2cd0ec69248cba965d577bcdb0f3b52e_JaffaCakes118.exe
Size

1.1MB
MD5

2cd0ec69248cba965d577bcdb0f3b52e
SHA1

2ff37c13484794a3ed7ad4c3c2b26869b8c998b9
SHA256

bd2563ad574ea93560cff3cad5c40c266c4c59f214d3f0420d6ea264914828b9
SHA512

d375e9c2d2f7c058dc4431ee4d4f845d53fa408c58abf5280e9e514db40ad5d9a5ec773074123253e7d2b7b49a03d4a33979d4ae8c375c7599cfb7ed51e7ad2d
SSDEEP

24576:KaHMv6Corjqny/Q5NSsWSyB0UPeS1GsGJPzSqpD7du:K1vqjd/Q5IrSSeEGzP+uPdu

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
behavioral1/memory/2372-6-0x0000000000400000-0x0000000000432000-memory.dmp	family_isrstealer
behavioral1/memory/2372-4-0x0000000000400000-0x0000000000432000-memory.dmp	family_isrstealer
behavioral1/memory/2372-21-0x0000000000400000-0x0000000000432000-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 2216 set thread context of 2372	2216	2cd0ec69248cba965d577bcdb0f3b52e_JaffaCakes118.exe	31
PID 2372 set thread context of 2736	2372	2cd0ec69248cba965d577bcdb0f3b52e_JaffaCakes118.exe	32

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2736-13-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2736-14-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2736-15-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2736-16-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2736-20-0x0000000000400000-0x0000000000453000-memory.dmp	upx

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 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	2cd0ec69248cba965d577bcdb0f3b52e_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2cd0ec69248cba965d577bcdb0f3b52e_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2cd0ec69248cba965d577bcdb0f3b52e_JaffaCakes118.exe

Suspicious use of FindShellTrayWindow 3 IoCs

pid	Process
2216	2cd0ec69248cba965d577bcdb0f3b52e_JaffaCakes118.exe
2216	2cd0ec69248cba965d577bcdb0f3b52e_JaffaCakes118.exe
2216	2cd0ec69248cba965d577bcdb0f3b52e_JaffaCakes118.exe

Suspicious use of SendNotifyMessage 3 IoCs

pid	Process
2216	2cd0ec69248cba965d577bcdb0f3b52e_JaffaCakes118.exe
2216	2cd0ec69248cba965d577bcdb0f3b52e_JaffaCakes118.exe
2216	2cd0ec69248cba965d577bcdb0f3b52e_JaffaCakes118.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2372	2cd0ec69248cba965d577bcdb0f3b52e_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 2216 wrote to memory of 2372	2216	2cd0ec69248cba965d577bcdb0f3b52e_JaffaCakes118.exe	31
PID 2216 wrote to memory of 2372	2216	2cd0ec69248cba965d577bcdb0f3b52e_JaffaCakes118.exe	31
PID 2216 wrote to memory of 2372	2216	2cd0ec69248cba965d577bcdb0f3b52e_JaffaCakes118.exe	31
PID 2216 wrote to memory of 2372	2216	2cd0ec69248cba965d577bcdb0f3b52e_JaffaCakes118.exe	31
PID 2216 wrote to memory of 2372	2216	2cd0ec69248cba965d577bcdb0f3b52e_JaffaCakes118.exe	31
PID 2216 wrote to memory of 2372	2216	2cd0ec69248cba965d577bcdb0f3b52e_JaffaCakes118.exe	31
PID 2216 wrote to memory of 2372	2216	2cd0ec69248cba965d577bcdb0f3b52e_JaffaCakes118.exe	31
PID 2372 wrote to memory of 2736	2372	2cd0ec69248cba965d577bcdb0f3b52e_JaffaCakes118.exe	32
PID 2372 wrote to memory of 2736	2372	2cd0ec69248cba965d577bcdb0f3b52e_JaffaCakes118.exe	32
PID 2372 wrote to memory of 2736	2372	2cd0ec69248cba965d577bcdb0f3b52e_JaffaCakes118.exe	32
PID 2372 wrote to memory of 2736	2372	2cd0ec69248cba965d577bcdb0f3b52e_JaffaCakes118.exe	32
PID 2372 wrote to memory of 2736	2372	2cd0ec69248cba965d577bcdb0f3b52e_JaffaCakes118.exe	32
PID 2372 wrote to memory of 2736	2372	2cd0ec69248cba965d577bcdb0f3b52e_JaffaCakes118.exe	32
PID 2372 wrote to memory of 2736	2372	2cd0ec69248cba965d577bcdb0f3b52e_JaffaCakes118.exe	32
PID 2372 wrote to memory of 2736	2372	2cd0ec69248cba965d577bcdb0f3b52e_JaffaCakes118.exe	32
PID 2372 wrote to memory of 2736	2372	2cd0ec69248cba965d577bcdb0f3b52e_JaffaCakes118.exe	32

C:\Users\Admin\AppData\Local\Temp\2cd0ec69248cba965d577bcdb0f3b52e_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\2cd0ec69248cba965d577bcdb0f3b52e_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:2216
- C:\Users\Admin\AppData\Local\Temp\2cd0ec69248cba965d577bcdb0f3b52e_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\2cd0ec69248cba965d577bcdb0f3b52e_JaffaCakes118.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2372
- - C:\Users\Admin\AppData\Local\Temp\2cd0ec69248cba965d577bcdb0f3b52e_JaffaCakes118.exe
    /scomma "C:\Users\Admin\AppData\Local\Temp\tmp.ini"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2736

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 Information Discovery

1

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

Replay Monitor

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Downloads

memory/2372-0-0x0000000000400000-0x0000000000432000-memory.dmp

Filesize
200KB

Download
memory/2372-6-0x0000000000400000-0x0000000000432000-memory.dmp

Filesize
200KB

Download
memory/2372-4-0x0000000000400000-0x0000000000432000-memory.dmp

Filesize
200KB

Download
memory/2372-2-0x0000000000400000-0x0000000000432000-memory.dmp

Filesize
200KB

Download
memory/2372-21-0x0000000000400000-0x0000000000432000-memory.dmp

Filesize
200KB

Download
memory/2736-13-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2736-14-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2736-15-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2736-16-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2736-20-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download

Analysis

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