isrstealer | 0a4091e082cd283c9b24277cdcf0bff2adbadde1371b81321620cd4f85dde7e5

General

Target

066d70aad37e93ff30dfea3cd49ccc79_JaffaCakes118.exe
Size

439KB
MD5

066d70aad37e93ff30dfea3cd49ccc79
SHA1

0de81c392d9eaa47c2a42e2ea8e0cc33519448b8
SHA256

0a4091e082cd283c9b24277cdcf0bff2adbadde1371b81321620cd4f85dde7e5
SHA512

8d53f0c36c0207ac1cfffee70d6070a24d47bf5e7f5c93d1d21eb6a2f931b08c6680ecb78c4e3c47d5e35737d35363837942c9f42321693059dce84a0008e587
SSDEEP

6144:csoxUUS9H0b5sDO1GdtzvZquk15Qu93RJW9MchgGDG6g9C+DqdhTEKFXe:E+UevdtzwbCU6McZK6g9DqD/FXe

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 2 IoCs

resource	yara_rule
behavioral1/memory/2744-16-0x0000000000080000-0x00000000000C2000-memory.dmp	family_isrstealer
behavioral1/memory/2744-20-0x0000000000080000-0x00000000000C2000-memory.dmp	family_isrstealer

Executes dropped EXE 1 IoCs

pid	Process
2744	svhost.exe

Loads dropped DLL 2 IoCs

pid	Process
2324	066d70aad37e93ff30dfea3cd49ccc79_JaffaCakes118.exe
2324	066d70aad37e93ff30dfea3cd49ccc79_JaffaCakes118.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2324 set thread context of 2744	2324	066d70aad37e93ff30dfea3cd49ccc79_JaffaCakes118.exe	31

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

System Information Discovery
T1082

NTFS ADS 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Local\Temp\FolderN\name.exe:Zone.Identifier	cmd.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2324	066d70aad37e93ff30dfea3cd49ccc79_JaffaCakes118.exe
2324	066d70aad37e93ff30dfea3cd49ccc79_JaffaCakes118.exe
2324	066d70aad37e93ff30dfea3cd49ccc79_JaffaCakes118.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2324	066d70aad37e93ff30dfea3cd49ccc79_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 2324 wrote to memory of 2880	2324	066d70aad37e93ff30dfea3cd49ccc79_JaffaCakes118.exe	28
PID 2324 wrote to memory of 2880	2324	066d70aad37e93ff30dfea3cd49ccc79_JaffaCakes118.exe	28
PID 2324 wrote to memory of 2880	2324	066d70aad37e93ff30dfea3cd49ccc79_JaffaCakes118.exe	28
PID 2324 wrote to memory of 2880	2324	066d70aad37e93ff30dfea3cd49ccc79_JaffaCakes118.exe	28
PID 2880 wrote to memory of 2540	2880	cmd.exe	30
PID 2880 wrote to memory of 2540	2880	cmd.exe	30
PID 2880 wrote to memory of 2540	2880	cmd.exe	30
PID 2880 wrote to memory of 2540	2880	cmd.exe	30
PID 2324 wrote to memory of 2744	2324	066d70aad37e93ff30dfea3cd49ccc79_JaffaCakes118.exe	31
PID 2324 wrote to memory of 2744	2324	066d70aad37e93ff30dfea3cd49ccc79_JaffaCakes118.exe	31
PID 2324 wrote to memory of 2744	2324	066d70aad37e93ff30dfea3cd49ccc79_JaffaCakes118.exe	31
PID 2324 wrote to memory of 2744	2324	066d70aad37e93ff30dfea3cd49ccc79_JaffaCakes118.exe	31
PID 2324 wrote to memory of 2744	2324	066d70aad37e93ff30dfea3cd49ccc79_JaffaCakes118.exe	31
PID 2324 wrote to memory of 2744	2324	066d70aad37e93ff30dfea3cd49ccc79_JaffaCakes118.exe	31
PID 2324 wrote to memory of 2744	2324	066d70aad37e93ff30dfea3cd49ccc79_JaffaCakes118.exe	31
PID 2324 wrote to memory of 2744	2324	066d70aad37e93ff30dfea3cd49ccc79_JaffaCakes118.exe	31

C:\Users\Admin\AppData\Local\Temp\066d70aad37e93ff30dfea3cd49ccc79_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\066d70aad37e93ff30dfea3cd49ccc79_JaffaCakes118.exe"
1⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2324
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe"
  2⤵
  - NTFS ADS
  - Suspicious use of WriteProcessMemory
  PID:2880
- - C:\Windows\SysWOW64\reg.exe
    reg add "HKCU\Software\Microsoft\Windows NT\CurrentVersion\Windows" /v Load /t REG_SZ /d "C:\Users\Admin\AppData\Local\Temp\FolderN\name.exe.lnk" /f
    3⤵
    PID:2540
- C:\Users\Admin\AppData\Local\Temp\svhost.exe
  "C:\Users\Admin\AppData\Local\Temp\svhost.exe"
  2⤵
  - Executes dropped EXE
  PID:2744

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\FolderN\name.exe

Filesize
439KB

MD5
066d70aad37e93ff30dfea3cd49ccc79

SHA1
0de81c392d9eaa47c2a42e2ea8e0cc33519448b8

SHA256
0a4091e082cd283c9b24277cdcf0bff2adbadde1371b81321620cd4f85dde7e5

SHA512
8d53f0c36c0207ac1cfffee70d6070a24d47bf5e7f5c93d1d21eb6a2f931b08c6680ecb78c4e3c47d5e35737d35363837942c9f42321693059dce84a0008e587

Download Submit
\Users\Admin\AppData\Local\Temp\svhost.exe

Filesize
1.6MB

MD5
32827e69b293b99013bbbe37d029245d

SHA1
bc9f80a38f09354d71467a05b0c5a82c3f7dac53

SHA256
9250b89157770e3ab59a2c7e2dd6b12b3c61d9b7c6620c3b4727e4bfff10f01f

SHA512
58c9a072e2bea0a8f22b4e69512abafad271ca91f2e3d2b4233796dd3d83021aad1c6da69fc8f7e7ca7919d34bde941cb8b5d185b668168866d1180558b93cf5

Download Submit
memory/2324-1-0x00000000742D0000-0x000000007487B000-memory.dmp

Filesize
5.7MB

Download
memory/2324-0-0x00000000742D0000-0x000000007487B000-memory.dmp

Filesize
5.7MB

Download
memory/2324-2-0x0000000000150000-0x0000000000190000-memory.dmp

Filesize
256KB

Download
memory/2324-22-0x00000000742D0000-0x000000007487B000-memory.dmp

Filesize
5.7MB

Download
memory/2744-15-0x0000000000080000-0x00000000000C2000-memory.dmp

Filesize
264KB

Download
memory/2744-16-0x0000000000080000-0x00000000000C2000-memory.dmp

Filesize
264KB

Download
memory/2744-13-0x0000000000080000-0x00000000000C2000-memory.dmp

Filesize
264KB

Download
memory/2744-20-0x0000000000080000-0x00000000000C2000-memory.dmp

Filesize
264KB

Download
memory/2744-17-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download

Analysis

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