isrstealer | e93c62f6504891ddf042b0a0509e5107fb1227a76f9c98bf829b84980c34044b

General

Target

34c4d20e314fd1d4e7ceb709e4aae5fc_JaffaCakes118.exe
Size

521KB
MD5

34c4d20e314fd1d4e7ceb709e4aae5fc
SHA1

d9cdd195c35c424e4fa209e3a6a3563fcff25aef
SHA256

e93c62f6504891ddf042b0a0509e5107fb1227a76f9c98bf829b84980c34044b
SHA512

c07731c7a8bafdeb4710971146c8f8983d411971ef01d077ee1dd9f1f95a91fae38337964b935a8d88ca104fdc259048b427b58a0d96ec2e687a84d6abc2cef9
SSDEEP

6144:aT5OEpgULTc0J36XgbQpV8TniqCy759sXokF2fn5aHBca87QZbEI7fLZAmq:kEEpBu/K59gokF2fXE7+

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 3 IoCs

Processes:

resource	yara_rule
behavioral2/memory/2088-5-0x0000000000400000-0x0000000000414000-memory.dmp	family_isrstealer
behavioral2/memory/2088-10-0x0000000000400000-0x0000000000414000-memory.dmp	family_isrstealer
behavioral2/memory/2088-14-0x0000000000400000-0x0000000000414000-memory.dmp	family_isrstealer

Executes dropped EXE 1 IoCs

Processes:

svchost.exe

pid	Process
2088	svchost.exe

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 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 1 IoCs

Processes:

34c4d20e314fd1d4e7ceb709e4aae5fc_JaffaCakes118.exe

description	pid	Process	procid_target
PID 4756 set thread context of 2088	4756	34c4d20e314fd1d4e7ceb709e4aae5fc_JaffaCakes118.exe	87

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

Processes:

34c4d20e314fd1d4e7ceb709e4aae5fc_JaffaCakes118.exesvchost.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	34c4d20e314fd1d4e7ceb709e4aae5fc_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

Processes:

svchost.exe

pid	Process
2088	svchost.exe
2088	svchost.exe
2088	svchost.exe
2088	svchost.exe
2088	svchost.exe
2088	svchost.exe
2088	svchost.exe
2088	svchost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

svchost.exe

pid	Process
2088	svchost.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

34c4d20e314fd1d4e7ceb709e4aae5fc_JaffaCakes118.exe

description	pid	Process	procid_target
PID 4756 wrote to memory of 2088	4756	34c4d20e314fd1d4e7ceb709e4aae5fc_JaffaCakes118.exe	87
PID 4756 wrote to memory of 2088	4756	34c4d20e314fd1d4e7ceb709e4aae5fc_JaffaCakes118.exe	87
PID 4756 wrote to memory of 2088	4756	34c4d20e314fd1d4e7ceb709e4aae5fc_JaffaCakes118.exe	87
PID 4756 wrote to memory of 2088	4756	34c4d20e314fd1d4e7ceb709e4aae5fc_JaffaCakes118.exe	87
PID 4756 wrote to memory of 2088	4756	34c4d20e314fd1d4e7ceb709e4aae5fc_JaffaCakes118.exe	87
PID 4756 wrote to memory of 2088	4756	34c4d20e314fd1d4e7ceb709e4aae5fc_JaffaCakes118.exe	87
PID 4756 wrote to memory of 2088	4756	34c4d20e314fd1d4e7ceb709e4aae5fc_JaffaCakes118.exe	87
PID 4756 wrote to memory of 2088	4756	34c4d20e314fd1d4e7ceb709e4aae5fc_JaffaCakes118.exe	87

C:\Users\Admin\AppData\Local\Temp\34c4d20e314fd1d4e7ceb709e4aae5fc_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\34c4d20e314fd1d4e7ceb709e4aae5fc_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4756
- C:\Users\Admin\AppData\Local\Temp\svchost.exe
  C:\Users\Admin\AppData\Local\Temp\svchost.exe
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of SetWindowsHookEx
  PID:2088

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

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

C:\Users\Admin\AppData\Local\Temp\svchost.exe

Filesize
34KB

MD5
e118330b4629b12368d91b9df6488be0

SHA1
ce90218c7e3b90df2a3409ec253048bb6472c2fd

SHA256
3a0f2936b8c45e8ba3458d69d7859a63844469e698652e15fb56639d32f40cc9

SHA512
ac91c04cb20223dbaaf594440cb778dff36e857921be427c8528ba4c6cdb3e8bf8e71e1ae8af7bde9c04ff5b97b379231625bc1a2b66aba2f98cd340cd8a94b0

Download Submit
memory/2088-5-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2088-10-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2088-14-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4756-0-0x0000000074E72000-0x0000000074E73000-memory.dmp

Filesize
4KB

Download
memory/4756-1-0x0000000074E70000-0x0000000075421000-memory.dmp

Filesize
5.7MB

Download
memory/4756-2-0x0000000074E70000-0x0000000075421000-memory.dmp

Filesize
5.7MB

Download
memory/4756-13-0x0000000074E70000-0x0000000075421000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads