isrstealer | 8cc0c19b9a9f5b46ad2dc47537f10c501ded27f4873f818a4f04e062818331d1

General

Target

25ec69412531b4ac0ee8abffe7cfe60a_JaffaCakes118.exe
Size

104KB
MD5

25ec69412531b4ac0ee8abffe7cfe60a
SHA1

c6b3ffd8a02f8baa15a4f5cf2c2f2b851bd8089f
SHA256

8cc0c19b9a9f5b46ad2dc47537f10c501ded27f4873f818a4f04e062818331d1
SHA512

32d40544d5ca1a44f3239023d38691e17e08581ebe79c906e3bf59380d47298f6bf09860b2ec18eb9bc76ceb63c06e18332fd6a3084dc83f249d7add32f7c526
SSDEEP

3072:aXyehnXQUZZb0x2OfqzIyrg507v7Rl80PcqR:aCehXQUZZb0QOfqV007v7RC0

Score

10^/10

isrstealer 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 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1840-15-0x0000000000400000-0x0000000000414000-memory.dmp	family_isrstealer
behavioral1/memory/1840-11-0x0000000000400000-0x0000000000414000-memory.dmp	family_isrstealer
behavioral1/memory/1840-23-0x0000000000400000-0x0000000000414000-memory.dmp	family_isrstealer
behavioral1/memory/1840-25-0x0000000000400000-0x0000000000414000-memory.dmp	family_isrstealer
behavioral1/memory/1840-27-0x0000000000400000-0x0000000000414000-memory.dmp	family_isrstealer

Executes dropped EXE 1 IoCs

Processes:

svchost.exe

pid process

1840 svchost.exe
Loads dropped DLL 1 IoCs

Processes:

25ec69412531b4ac0ee8abffe7cfe60a_JaffaCakes118.exe

pid process

2156 25ec69412531b4ac0ee8abffe7cfe60a_JaffaCakes118.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 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

Processes:

25ec69412531b4ac0ee8abffe7cfe60a_JaffaCakes118.exe

description pid process target process

PID 2156 set thread context of 1840 2156 25ec69412531b4ac0ee8abffe7cfe60a_JaffaCakes118.exe svchost.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

svchost.exe

pid process

1840 svchost.exe
1840 svchost.exe
1840 svchost.exe
1840 svchost.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

25ec69412531b4ac0ee8abffe7cfe60a_JaffaCakes118.exe

description pid process

Token: SeDebugPrivilege 2156 25ec69412531b4ac0ee8abffe7cfe60a_JaffaCakes118.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

svchost.exe

pid process

1840 svchost.exe

pid	process
1840	svchost.exe

pid	process
2156	25ec69412531b4ac0ee8abffe7cfe60a_JaffaCakes118.exe

description	pid	process	target process
PID 2156 set thread context of 1840	2156	25ec69412531b4ac0ee8abffe7cfe60a_JaffaCakes118.exe	svchost.exe

pid	process
1840	svchost.exe
1840	svchost.exe
1840	svchost.exe
1840	svchost.exe

description	pid	process
Token: SeDebugPrivilege	2156	25ec69412531b4ac0ee8abffe7cfe60a_JaffaCakes118.exe

pid	process
1840	svchost.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

25ec69412531b4ac0ee8abffe7cfe60a_JaffaCakes118.exe

description	pid	process	target process
PID 2156 wrote to memory of 1840	2156	25ec69412531b4ac0ee8abffe7cfe60a_JaffaCakes118.exe	svchost.exe
PID 2156 wrote to memory of 1840	2156	25ec69412531b4ac0ee8abffe7cfe60a_JaffaCakes118.exe	svchost.exe
PID 2156 wrote to memory of 1840	2156	25ec69412531b4ac0ee8abffe7cfe60a_JaffaCakes118.exe	svchost.exe
PID 2156 wrote to memory of 1840	2156	25ec69412531b4ac0ee8abffe7cfe60a_JaffaCakes118.exe	svchost.exe
PID 2156 wrote to memory of 1840	2156	25ec69412531b4ac0ee8abffe7cfe60a_JaffaCakes118.exe	svchost.exe
PID 2156 wrote to memory of 1840	2156	25ec69412531b4ac0ee8abffe7cfe60a_JaffaCakes118.exe	svchost.exe
PID 2156 wrote to memory of 1840	2156	25ec69412531b4ac0ee8abffe7cfe60a_JaffaCakes118.exe	svchost.exe
PID 2156 wrote to memory of 1840	2156	25ec69412531b4ac0ee8abffe7cfe60a_JaffaCakes118.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\25ec69412531b4ac0ee8abffe7cfe60a_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\25ec69412531b4ac0ee8abffe7cfe60a_JaffaCakes118.exe"
1⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2156
- C:\Users\Admin\AppData\Local\Temp\svchost.exe
  C:\Users\Admin\AppData\Local\Temp\svchost.exe
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of SetWindowsHookEx
  PID:1840

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

Lateral Movement

Collection

Data from Local System

2

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
31KB

MD5
ed797d8dc2c92401985d162e42ffa450

SHA1
0f02fc517c7facc4baefde4fe9467fb6488ebabe

SHA256
b746362010a101cb5931bc066f0f4d3fc740c02a68c1f37fc3c8e6c87fd7cb1e

SHA512
e831a6ff987f3ef29982da16afad06938b68eddd43c234ba88d1c96a1b5547f2284baf35cbb3a5bfd75e7f0445d14daa014e0ba00b4db72c67f83f0a314c80c2

Download Submit
memory/1840-11-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1840-15-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1840-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1840-9-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1840-7-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1840-23-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1840-25-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1840-27-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2156-2-0x0000000074DD0000-0x000000007537B000-memory.dmp

Filesize
5.7MB

Download
memory/2156-1-0x0000000074DD0000-0x000000007537B000-memory.dmp

Filesize
5.7MB

Download
memory/2156-0-0x0000000074DD1000-0x0000000074DD2000-memory.dmp

Filesize
4KB

Download
memory/2156-24-0x0000000074DD0000-0x000000007537B000-memory.dmp

Filesize
5.7MB

Download

Analysis

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