isrstealer | 37abcda409909bae474da0205815688b2535404c35a1dce526cab1e1cf6e03fb

Analysis

max time kernel
120s
max time network
121s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
22-07-2024 14:39

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General

Target

6392ab8c6c194dc2bcaa2ae5b5166d4f_JaffaCakes118.exe
Size

214KB
MD5

6392ab8c6c194dc2bcaa2ae5b5166d4f
SHA1

55d604d051b1d0459f885ed4ebb9cdf9c8fe9b20
SHA256

37abcda409909bae474da0205815688b2535404c35a1dce526cab1e1cf6e03fb
SHA512

f26b4a84ca25601b79ad0aa24873233ad6c3c332472cea9edd4cf6c2c4e0100f4873d715d38a66fd5b6645bc925199e086f9bd4b2fc379c724c1cb2ec8f39bd1
SSDEEP

3072:EMLOBGMTX0EoVbCh0Rw0omskhdPe/uN5yK2TQ:EMO8MTX0EoVbCaRskhZp5y

Score

10^/10

isrstealer 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 4 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1932-11-0x0000000000400000-0x0000000000414000-memory.dmp	family_isrstealer
behavioral1/memory/1932-7-0x0000000000400000-0x0000000000414000-memory.dmp	family_isrstealer
behavioral1/memory/1932-16-0x0000000000400000-0x0000000000414000-memory.dmp	family_isrstealer
behavioral1/memory/1932-20-0x0000000000400000-0x0000000000414000-memory.dmp	family_isrstealer

Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

Suspicious use of SetThreadContext 1 IoCs

Processes:

6392ab8c6c194dc2bcaa2ae5b5166d4f_JaffaCakes118.exe

description	pid	Process	procid_target
PID 2596 set thread context of 1932	2596	6392ab8c6c194dc2bcaa2ae5b5166d4f_JaffaCakes118.exe	30

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

vbc.exe

pid	Process
1932	vbc.exe
1932	vbc.exe
1932	vbc.exe
1932	vbc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

vbc.exe

pid	Process
1932	vbc.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

6392ab8c6c194dc2bcaa2ae5b5166d4f_JaffaCakes118.exe

description	pid	Process	procid_target
PID 2596 wrote to memory of 1932	2596	6392ab8c6c194dc2bcaa2ae5b5166d4f_JaffaCakes118.exe	30
PID 2596 wrote to memory of 1932	2596	6392ab8c6c194dc2bcaa2ae5b5166d4f_JaffaCakes118.exe	30
PID 2596 wrote to memory of 1932	2596	6392ab8c6c194dc2bcaa2ae5b5166d4f_JaffaCakes118.exe	30
PID 2596 wrote to memory of 1932	2596	6392ab8c6c194dc2bcaa2ae5b5166d4f_JaffaCakes118.exe	30
PID 2596 wrote to memory of 1932	2596	6392ab8c6c194dc2bcaa2ae5b5166d4f_JaffaCakes118.exe	30
PID 2596 wrote to memory of 1932	2596	6392ab8c6c194dc2bcaa2ae5b5166d4f_JaffaCakes118.exe	30
PID 2596 wrote to memory of 1932	2596	6392ab8c6c194dc2bcaa2ae5b5166d4f_JaffaCakes118.exe	30
PID 2596 wrote to memory of 1932	2596	6392ab8c6c194dc2bcaa2ae5b5166d4f_JaffaCakes118.exe	30

C:\Users\Admin\AppData\Local\Temp\6392ab8c6c194dc2bcaa2ae5b5166d4f_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\6392ab8c6c194dc2bcaa2ae5b5166d4f_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2596
- C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\vbc.exe
  C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\vbc.exe
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of SetWindowsHookEx
  PID:1932

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scripting

T1064

Persistence

Privilege Escalation

Defense Evasion

Scripting

T1064

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1932-5-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1932-11-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1932-9-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1932-7-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1932-3-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1932-16-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1932-18-0x0000000000420000-0x00000000004FF000-memory.dmp

Filesize
892KB

Download
memory/1932-20-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2596-0-0x0000000073D41000-0x0000000073D42000-memory.dmp

Filesize
4KB

Download
memory/2596-1-0x0000000073D40000-0x00000000742EB000-memory.dmp

Filesize
5.7MB

Download
memory/2596-2-0x0000000073D40000-0x00000000742EB000-memory.dmp

Filesize
5.7MB

Download
memory/2596-17-0x0000000073D40000-0x00000000742EB000-memory.dmp

Filesize
5.7MB

Download