24abfc16d6b92a09adba348429b1bcf37815b4ee8522293f4f893a4605dcb95f

General

Target

24abfc16d6b92a09adba348429b1bcf37815b4ee8522293f4f893a4605dcb95fN.exe
Size

231KB
MD5

362eb56048c54c7e94f49071c3110d80
SHA1

50b11e0c6bbf1b4a0d03fa190265efe6594fe6a1
SHA256

24abfc16d6b92a09adba348429b1bcf37815b4ee8522293f4f893a4605dcb95f
SHA512

5047bffdb1cb73cfbbc931ca6afbe0ff69bf1c54a2a0c0ec7cb53b467d7a1e73a892529315a5cfd2527faec2ab7e98e3bfccfc27077f07c208df73a209dbf5bb
SSDEEP

3072:SPUHpiKT2t2UHIu05W7SAFJJOUD9cckiKop97f3r8n9t9Ygntw6:/rTfUHeeSKOS9ccFKk3Y9t9YZ6

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2188	Isass.exe

Loads dropped DLL 2 IoCs

pid	Process
584	24abfc16d6b92a09adba348429b1bcf37815b4ee8522293f4f893a4605dcb95fN.exe
584	24abfc16d6b92a09adba348429b1bcf37815b4ee8522293f4f893a4605dcb95fN.exe

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

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-457978338-2990298471-2379561640-1000\Software\Microsoft\Windows\CurrentVersion\Run\Isass.exe = "C:\\Users\\Public\\Microsoft Build\\Isass.exe"	24abfc16d6b92a09adba348429b1bcf37815b4ee8522293f4f893a4605dcb95fN.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Isass.exe = "C:\\Users\\Public\\Microsoft Build\\Isass.exe"	24abfc16d6b92a09adba348429b1bcf37815b4ee8522293f4f893a4605dcb95fN.exe

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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	24abfc16d6b92a09adba348429b1bcf37815b4ee8522293f4f893a4605dcb95fN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Isass.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
584	24abfc16d6b92a09adba348429b1bcf37815b4ee8522293f4f893a4605dcb95fN.exe
2188	Isass.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 584 wrote to memory of 2188	584	24abfc16d6b92a09adba348429b1bcf37815b4ee8522293f4f893a4605dcb95fN.exe	30
PID 584 wrote to memory of 2188	584	24abfc16d6b92a09adba348429b1bcf37815b4ee8522293f4f893a4605dcb95fN.exe	30
PID 584 wrote to memory of 2188	584	24abfc16d6b92a09adba348429b1bcf37815b4ee8522293f4f893a4605dcb95fN.exe	30
PID 584 wrote to memory of 2188	584	24abfc16d6b92a09adba348429b1bcf37815b4ee8522293f4f893a4605dcb95fN.exe	30

C:\Users\Admin\AppData\Local\Temp\24abfc16d6b92a09adba348429b1bcf37815b4ee8522293f4f893a4605dcb95fN.exe
"C:\Users\Admin\AppData\Local\Temp\24abfc16d6b92a09adba348429b1bcf37815b4ee8522293f4f893a4605dcb95fN.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:584
- C:\Users\Public\Microsoft Build\Isass.exe
  "C:\Users\Public\Microsoft Build\Isass.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  PID:2188

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

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Downloads

\Users\Public\Microsoft Build\Isass.exe

Filesize
231KB

MD5
362eb56048c54c7e94f49071c3110d80

SHA1
50b11e0c6bbf1b4a0d03fa190265efe6594fe6a1

SHA256
24abfc16d6b92a09adba348429b1bcf37815b4ee8522293f4f893a4605dcb95f

SHA512
5047bffdb1cb73cfbbc931ca6afbe0ff69bf1c54a2a0c0ec7cb53b467d7a1e73a892529315a5cfd2527faec2ab7e98e3bfccfc27077f07c208df73a209dbf5bb

Download Submit
memory/584-8-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/584-11-0x0000000004040000-0x00000000052E9000-memory.dmp

Filesize
18.7MB

Download
memory/584-12-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/2188-13-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/2188-14-0x00000000003B0000-0x00000000003B1000-memory.dmp

Filesize
4KB

Download
memory/2188-15-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/2188-16-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/2188-19-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/2188-20-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/2188-25-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/2188-26-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/2188-30-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/2188-32-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/2188-36-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/2188-37-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/2188-42-0x0000000004150000-0x00000000053F9000-memory.dmp

Filesize
18.7MB

Download
memory/2188-43-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads