isrstealer | ec10f4e43d71e5d52862f7d11af464316b4301254f62fedfba385a097923ffa4

General

Target

4ece9e1e721cd7dc5a270b3cf7d1f083_JaffaCakes118.exe
Size

696KB
MD5

4ece9e1e721cd7dc5a270b3cf7d1f083
SHA1

a863b9cb0531deee7e356f2534a39723b5ee929b
SHA256

ec10f4e43d71e5d52862f7d11af464316b4301254f62fedfba385a097923ffa4
SHA512

8560755a71bb652cad90839b85d5f6f8d63984b1e5e8a887ec55d38a206451fb6c639aafd6cc4f904b776081b9c940800c3100125dbfcdd65c7e1fda4d3c14be
SSDEEP

12288:3m1+jgi2aZFMZj7Kexe2f27HjUtbnbKEFsB61a9tNMbFynKNJDzGGpZJD:yxqZaZjWy2Utbusd1a9tObFynKHGG1

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

Processes:

resource	yara_rule
behavioral2/memory/1588-35-0x0000000000400000-0x0000000000414000-memory.dmp	family_isrstealer
behavioral2/memory/1588-37-0x0000000000400000-0x0000000000414000-memory.dmp	family_isrstealer

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

4ece9e1e721cd7dc5a270b3cf7d1f083_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2636447293-1148739154-93880854-1000\Control Panel\International\Geo\Nation	4ece9e1e721cd7dc5a270b3cf7d1f083_JaffaCakes118.exe

Executes dropped EXE 2 IoCs

Processes:

chronic-16-12.exeSnDk&p.exe

pid process

3408 chronic-16-12.exe
2120 SnDk&p.exe
Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

Processes:

SnDk&p.exe

pid process

2120 SnDk&p.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

chronic-16-12.exe

description pid process target process

PID 3408 set thread context of 1588 3408 chronic-16-12.exe svchost.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
3408	chronic-16-12.exe
2120	SnDk&p.exe

description	pid	process	target process
PID 3408 set thread context of 1588	3408	chronic-16-12.exe	svchost.exe

Modifies registry class 3 IoCs

Processes:

SnDk&p.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.key	SnDk&p.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.key\	SnDk&p.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.key\ = "regfile"	SnDk&p.exe

Suspicious behavior: EnumeratesProcesses 12 IoCs

Processes:

SnDk&p.exesvchost.exe

pid	process
2120	SnDk&p.exe
2120	SnDk&p.exe
2120	SnDk&p.exe
2120	SnDk&p.exe
1588	svchost.exe
1588	svchost.exe
1588	svchost.exe
1588	svchost.exe
1588	svchost.exe
1588	svchost.exe
1588	svchost.exe
1588	svchost.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

AUDIODG.EXE

description pid process

Token: 33 4832 AUDIODG.EXE
Token: SeIncBasePriorityPrivilege 4832 AUDIODG.EXE
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

svchost.exe

pid process

1588 svchost.exe

description	pid	process
Token: 33	4832	AUDIODG.EXE
Token: SeIncBasePriorityPrivilege	4832	AUDIODG.EXE

pid	process
1588	svchost.exe

Suspicious use of WriteProcessMemory 14 IoCs

Processes:

4ece9e1e721cd7dc5a270b3cf7d1f083_JaffaCakes118.exechronic-16-12.exe

description	pid	process	target process
PID 4820 wrote to memory of 3408	4820	4ece9e1e721cd7dc5a270b3cf7d1f083_JaffaCakes118.exe	chronic-16-12.exe
PID 4820 wrote to memory of 3408	4820	4ece9e1e721cd7dc5a270b3cf7d1f083_JaffaCakes118.exe	chronic-16-12.exe
PID 4820 wrote to memory of 3408	4820	4ece9e1e721cd7dc5a270b3cf7d1f083_JaffaCakes118.exe	chronic-16-12.exe
PID 4820 wrote to memory of 2120	4820	4ece9e1e721cd7dc5a270b3cf7d1f083_JaffaCakes118.exe	SnDk&p.exe
PID 4820 wrote to memory of 2120	4820	4ece9e1e721cd7dc5a270b3cf7d1f083_JaffaCakes118.exe	SnDk&p.exe
PID 4820 wrote to memory of 2120	4820	4ece9e1e721cd7dc5a270b3cf7d1f083_JaffaCakes118.exe	SnDk&p.exe
PID 3408 wrote to memory of 1588	3408	chronic-16-12.exe	svchost.exe
PID 3408 wrote to memory of 1588	3408	chronic-16-12.exe	svchost.exe
PID 3408 wrote to memory of 1588	3408	chronic-16-12.exe	svchost.exe
PID 3408 wrote to memory of 1588	3408	chronic-16-12.exe	svchost.exe
PID 3408 wrote to memory of 1588	3408	chronic-16-12.exe	svchost.exe
PID 3408 wrote to memory of 1588	3408	chronic-16-12.exe	svchost.exe
PID 3408 wrote to memory of 1588	3408	chronic-16-12.exe	svchost.exe
PID 3408 wrote to memory of 1588	3408	chronic-16-12.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\4ece9e1e721cd7dc5a270b3cf7d1f083_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\4ece9e1e721cd7dc5a270b3cf7d1f083_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4820
- C:\Users\Admin\AppData\Local\Temp\chronic-16-12.exe
  "C:\Users\Admin\AppData\Local\Temp\chronic-16-12.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - Suspicious use of WriteProcessMemory
  PID:3408
- - C:\Windows\SysWOW64\svchost.exe
    "C:\Windows\system32\svchost.exe"
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of SetWindowsHookEx
    PID:1588
- C:\Users\Admin\AppData\Local\Temp\SnDk&p.exe
  "C:\Users\Admin\AppData\Local\Temp\SnDk&p.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - Modifies registry class
  - Suspicious behavior: EnumeratesProcesses
  PID:2120

C:\Windows\system32\AUDIODG.EXE
C:\Windows\system32\AUDIODG.EXE 0x300 0x328
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:4832

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\SnDk&p.exe

Filesize
282KB

MD5
3e9b7b76b154342811a8dcc2b507c1ce

SHA1
2828b9bd9e3d65e578b51b049a2bf5d4f2aef182

SHA256
16ff4927174e13d3bfa6da64956c8fb50a6087fba07b26234d0a4bfcdbaff729

SHA512
b6aa6f304d5976ab4b9330fcff39c3c04e38c900500d020a3bb5eb7dc86036fe5b0c4d5acbf838d1d8a0bbcffe384e44379bb552182fa15a5420641bc1738090

Download Submit
C:\Users\Admin\AppData\Local\Temp\chronic-16-12.exe

Filesize
224KB

MD5
e9448b0e4b0460577192295bde8324c1

SHA1
647bf34d64c913f41f74c13b431159f956eaa032

SHA256
f567a106a362584f89d672f36fe1651edd166f03e579c6d682e2ff222e73baa8

SHA512
5fdc74cdbc3c32a4ce5159ed234e4104eb15ecb2d8fdbb3968d58cbc2a9b378c920e6d40940f3eca231df236d142c8890553b2b43093eec4b36506f8d485a6c5

Download Submit
memory/1588-37-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1588-35-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2120-48-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/2120-50-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/2120-24-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/2120-58-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/2120-57-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/2120-56-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/2120-34-0x0000000002330000-0x0000000002331000-memory.dmp

Filesize
4KB

Download
memory/2120-33-0x0000000002410000-0x0000000002411000-memory.dmp

Filesize
4KB

Download
memory/2120-32-0x0000000002420000-0x0000000002421000-memory.dmp

Filesize
4KB

Download
memory/2120-31-0x0000000002390000-0x0000000002391000-memory.dmp

Filesize
4KB

Download
memory/2120-30-0x00000000023A0000-0x00000000023A1000-memory.dmp

Filesize
4KB

Download
memory/2120-29-0x0000000002340000-0x0000000002341000-memory.dmp

Filesize
4KB

Download
memory/2120-55-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/2120-54-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/2120-53-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/2120-43-0x00000000023C0000-0x00000000023C1000-memory.dmp

Filesize
4KB

Download
memory/2120-42-0x00000000023B0000-0x00000000023B1000-memory.dmp

Filesize
4KB

Download
memory/2120-52-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/2120-51-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/2120-49-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/2120-45-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/2120-46-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/2120-47-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/3408-44-0x0000000074C30000-0x00000000751E1000-memory.dmp

Filesize
5.7MB

Download
memory/3408-39-0x0000000005BF0000-0x0000000005CF0000-memory.dmp

Filesize
1024KB

Download
memory/3408-41-0x0000000005BF0000-0x0000000005CF0000-memory.dmp

Filesize
1024KB

Download
memory/3408-28-0x0000000074C30000-0x00000000751E1000-memory.dmp

Filesize
5.7MB

Download
memory/3408-27-0x0000000074C30000-0x00000000751E1000-memory.dmp

Filesize
5.7MB

Download
memory/3408-25-0x0000000074C32000-0x0000000074C33000-memory.dmp

Filesize
4KB

Download
memory/4820-0-0x00007FFB5BE15000-0x00007FFB5BE16000-memory.dmp

Filesize
4KB

Download
memory/4820-4-0x00007FFB5BB60000-0x00007FFB5C501000-memory.dmp

Filesize
9.6MB

Download
memory/4820-1-0x000000001B4F0000-0x000000001B596000-memory.dmp

Filesize
664KB

Download
memory/4820-2-0x00007FFB5BB60000-0x00007FFB5C501000-memory.dmp

Filesize
9.6MB

Download
memory/4820-26-0x00007FFB5BB60000-0x00007FFB5C501000-memory.dmp

Filesize
9.6MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads