isrstealer | 57e61f1476a1898ea5e459a66b69122d7d72dfde6fa4d1f43ecd8ff6e416f681

General

Target

22e9d391301d9ec7154c56af2916e170_JaffaCakes118.exe
Size

60KB
MD5

22e9d391301d9ec7154c56af2916e170
SHA1

c0416932697013591282ffd40b1a349fb56b06df
SHA256

57e61f1476a1898ea5e459a66b69122d7d72dfde6fa4d1f43ecd8ff6e416f681
SHA512

aed2f0793790d09f035abd68a96c2f83649086d3a7c9c07ed8c59689247735d744b3a60ee4307990062f505d750f669b1810fe8da27ad58ef115a56826529205
SSDEEP

1536:6XmDtoxQQ0DhVxEaIG9EJ4nH6dpl/H8l:68RhVfc4Hspl/8

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

resource	yara_rule
behavioral2/memory/4900-3-0x0000000000400000-0x0000000000414000-memory.dmp	family_isrstealer
behavioral2/memory/4900-5-0x0000000000400000-0x0000000000414000-memory.dmp	family_isrstealer
behavioral2/memory/4900-10-0x0000000000400000-0x0000000000414000-memory.dmp	family_isrstealer
behavioral2/memory/4900-13-0x0000000000400000-0x0000000000414000-memory.dmp	family_isrstealer

Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001
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 2 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4364-0-0x0000000000400000-0x000000000041F000-memory.dmp	upx
behavioral2/memory/4364-7-0x0000000000400000-0x000000000041F000-memory.dmp	upx

Maps connected drives based on registry 3 TTPs 2 IoCs

Disk information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	22e9d391301d9ec7154c56af2916e170_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	22e9d391301d9ec7154c56af2916e170_JaffaCakes118.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4364 set thread context of 4900	4364	22e9d391301d9ec7154c56af2916e170_JaffaCakes118.exe	81

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
4364	22e9d391301d9ec7154c56af2916e170_JaffaCakes118.exe
4364	22e9d391301d9ec7154c56af2916e170_JaffaCakes118.exe
4900	22e9d391301d9ec7154c56af2916e170_JaffaCakes118.exe
4900	22e9d391301d9ec7154c56af2916e170_JaffaCakes118.exe
4900	22e9d391301d9ec7154c56af2916e170_JaffaCakes118.exe
4900	22e9d391301d9ec7154c56af2916e170_JaffaCakes118.exe
4900	22e9d391301d9ec7154c56af2916e170_JaffaCakes118.exe
4900	22e9d391301d9ec7154c56af2916e170_JaffaCakes118.exe
4900	22e9d391301d9ec7154c56af2916e170_JaffaCakes118.exe
4900	22e9d391301d9ec7154c56af2916e170_JaffaCakes118.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4364	22e9d391301d9ec7154c56af2916e170_JaffaCakes118.exe
4900	22e9d391301d9ec7154c56af2916e170_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 4364 wrote to memory of 4900	4364	22e9d391301d9ec7154c56af2916e170_JaffaCakes118.exe	81
PID 4364 wrote to memory of 4900	4364	22e9d391301d9ec7154c56af2916e170_JaffaCakes118.exe	81
PID 4364 wrote to memory of 4900	4364	22e9d391301d9ec7154c56af2916e170_JaffaCakes118.exe	81
PID 4364 wrote to memory of 4900	4364	22e9d391301d9ec7154c56af2916e170_JaffaCakes118.exe	81
PID 4364 wrote to memory of 4900	4364	22e9d391301d9ec7154c56af2916e170_JaffaCakes118.exe	81
PID 4364 wrote to memory of 4900	4364	22e9d391301d9ec7154c56af2916e170_JaffaCakes118.exe	81
PID 4364 wrote to memory of 4900	4364	22e9d391301d9ec7154c56af2916e170_JaffaCakes118.exe	81
PID 4364 wrote to memory of 4900	4364	22e9d391301d9ec7154c56af2916e170_JaffaCakes118.exe	81

C:\Users\Admin\AppData\Local\Temp\22e9d391301d9ec7154c56af2916e170_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\22e9d391301d9ec7154c56af2916e170_JaffaCakes118.exe"
1⤵
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4364
- C:\Users\Admin\AppData\Local\Temp\22e9d391301d9ec7154c56af2916e170_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\22e9d391301d9ec7154c56af2916e170_JaffaCakes118.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of SetWindowsHookEx
  PID:4900

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

2

T1552

Credentials In Files

2

T1552.001

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

2

T1082

Lateral Movement

Collection

Data from Local System

2

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/4364-0-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/4364-7-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/4900-3-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4900-5-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4900-10-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4900-13-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download

Analysis

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