isrstealer | abfb213c4a89239f368470b588043b694fa7da59cad09a3be81031b0fd3f3acc

General

Target

76f6ba1907225ad91884811e48dbd8d5_JaffaCakes118.exe
Size

50KB
MD5

76f6ba1907225ad91884811e48dbd8d5
SHA1

07bd13a930ae44ad1277aad1bf30479ad95e9e34
SHA256

abfb213c4a89239f368470b588043b694fa7da59cad09a3be81031b0fd3f3acc
SHA512

3e473a3204d8c41e57f55a82ec56bb1bfb24971634c5575e71c70f1be88302c8dfc15143491a3445db38f7b780bd978c71847561124e6ba64e569b0ae4ac7770
SSDEEP

768:pH+0GGDyxLQBruIKWcC+wR5TV4UFo53Gt5KnhuKmSsKjtAh8tNIt2YqiTVYgPl4:BhoLQoIKdO4UY3GtUnUCsKJASG3JTVv4

Score

10^/10

isrstealer discovery spyware stealer trojan

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/2480-3-0x0000000000400000-0x0000000000414000-memory.dmp	family_isrstealer
behavioral1/memory/2480-9-0x0000000000400000-0x0000000000414000-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

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2292 set thread context of 2480	2292	76f6ba1907225ad91884811e48dbd8d5_JaffaCakes118.exe	30

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 2 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	76f6ba1907225ad91884811e48dbd8d5_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	76f6ba1907225ad91884811e48dbd8d5_JaffaCakes118.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2480	76f6ba1907225ad91884811e48dbd8d5_JaffaCakes118.exe
2480	76f6ba1907225ad91884811e48dbd8d5_JaffaCakes118.exe
2480	76f6ba1907225ad91884811e48dbd8d5_JaffaCakes118.exe
2480	76f6ba1907225ad91884811e48dbd8d5_JaffaCakes118.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2292	76f6ba1907225ad91884811e48dbd8d5_JaffaCakes118.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2480	76f6ba1907225ad91884811e48dbd8d5_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2292 wrote to memory of 2480	2292	76f6ba1907225ad91884811e48dbd8d5_JaffaCakes118.exe	30
PID 2292 wrote to memory of 2480	2292	76f6ba1907225ad91884811e48dbd8d5_JaffaCakes118.exe	30
PID 2292 wrote to memory of 2480	2292	76f6ba1907225ad91884811e48dbd8d5_JaffaCakes118.exe	30
PID 2292 wrote to memory of 2480	2292	76f6ba1907225ad91884811e48dbd8d5_JaffaCakes118.exe	30
PID 2292 wrote to memory of 2480	2292	76f6ba1907225ad91884811e48dbd8d5_JaffaCakes118.exe	30
PID 2292 wrote to memory of 2480	2292	76f6ba1907225ad91884811e48dbd8d5_JaffaCakes118.exe	30
PID 2292 wrote to memory of 2480	2292	76f6ba1907225ad91884811e48dbd8d5_JaffaCakes118.exe	30
PID 2292 wrote to memory of 2480	2292	76f6ba1907225ad91884811e48dbd8d5_JaffaCakes118.exe	30
PID 2292 wrote to memory of 2480	2292	76f6ba1907225ad91884811e48dbd8d5_JaffaCakes118.exe	30

C:\Users\Admin\AppData\Local\Temp\76f6ba1907225ad91884811e48dbd8d5_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\76f6ba1907225ad91884811e48dbd8d5_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2292
- C:\Users\Admin\AppData\Local\Temp\76f6ba1907225ad91884811e48dbd8d5_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\76f6ba1907225ad91884811e48dbd8d5_JaffaCakes118.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of SetWindowsHookEx
  PID:2480

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

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

2

T1005

Command and Control

Exfiltration

Impact

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Downloads

memory/2292-0-0x0000000074811000-0x0000000074812000-memory.dmp

Filesize
4KB

Download
memory/2292-1-0x0000000074810000-0x0000000074DBB000-memory.dmp

Filesize
5.7MB

Download
memory/2292-2-0x0000000074810000-0x0000000074DBB000-memory.dmp

Filesize
5.7MB

Download
memory/2292-5-0x0000000074810000-0x0000000074DBB000-memory.dmp

Filesize
5.7MB

Download
memory/2480-3-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2480-9-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download

Analysis

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