c6fc97461f43424ff52df79b13cc3963060582bd3b6df60f56081a32e5598bda

General

Target

10b589002734298b2a80bbf459aa41a0_exe32_JC.exe
Size

213KB
MD5

10b589002734298b2a80bbf459aa41a0
SHA1

4e7b7006de1aeda0b9fa2c76ce1a7a1d33bd1e86
SHA256

c6fc97461f43424ff52df79b13cc3963060582bd3b6df60f56081a32e5598bda
SHA512

f42a15b0087614448634f3aaa5925ef69071cf86c29de4fd9e6cc150f58244983267e6c4ac945c5957e80ddecf9cbf87fd0e98fac16f143af88c66aa8081c173
SSDEEP

6144:ztvBPnU1b7e9SQii1EkoNlhlrQ2ZrM2x:Zv1nWdQP1EDhZPx

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
4844	Isass.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-1-5-21-1574508946-349927670-1185736483-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Isass.exe = "C:\\Program Files (x86)\\Microsoft Build\\Isass.exe"	10b589002734298b2a80bbf459aa41a0_exe32_JC.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Isass.exe = "C:\\Program Files (x86)\\Microsoft Build\\Isass.exe"	10b589002734298b2a80bbf459aa41a0_exe32_JC.exe

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\Microsoft Build\Isass.exe	10b589002734298b2a80bbf459aa41a0_exe32_JC.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2748	10b589002734298b2a80bbf459aa41a0_exe32_JC.exe
2748	10b589002734298b2a80bbf459aa41a0_exe32_JC.exe
4844	Isass.exe
4844	Isass.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2748 wrote to memory of 4844	2748	10b589002734298b2a80bbf459aa41a0_exe32_JC.exe	86
PID 2748 wrote to memory of 4844	2748	10b589002734298b2a80bbf459aa41a0_exe32_JC.exe	86
PID 2748 wrote to memory of 4844	2748	10b589002734298b2a80bbf459aa41a0_exe32_JC.exe	86

C:\Users\Admin\AppData\Local\Temp\10b589002734298b2a80bbf459aa41a0_exe32_JC.exe
"C:\Users\Admin\AppData\Local\Temp\10b589002734298b2a80bbf459aa41a0_exe32_JC.exe"
1⤵
- Adds Run key to start application
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2748
- C:\Program Files (x86)\Microsoft Build\Isass.exe
  "C:\Program Files (x86)\Microsoft Build\Isass.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  PID:4844

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

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Program Files (x86)\Microsoft Build\Isass.exe

Filesize
213KB

MD5
10b589002734298b2a80bbf459aa41a0

SHA1
4e7b7006de1aeda0b9fa2c76ce1a7a1d33bd1e86

SHA256
c6fc97461f43424ff52df79b13cc3963060582bd3b6df60f56081a32e5598bda

SHA512
f42a15b0087614448634f3aaa5925ef69071cf86c29de4fd9e6cc150f58244983267e6c4ac945c5957e80ddecf9cbf87fd0e98fac16f143af88c66aa8081c173

Download Submit
C:\Program Files (x86)\Microsoft Build\Isass.exe

Filesize
213KB

MD5
10b589002734298b2a80bbf459aa41a0

SHA1
4e7b7006de1aeda0b9fa2c76ce1a7a1d33bd1e86

SHA256
c6fc97461f43424ff52df79b13cc3963060582bd3b6df60f56081a32e5598bda

SHA512
f42a15b0087614448634f3aaa5925ef69071cf86c29de4fd9e6cc150f58244983267e6c4ac945c5957e80ddecf9cbf87fd0e98fac16f143af88c66aa8081c173

Download Submit
C:\ProgramData\Adobe\Setup\{AC76BA86-7AD7-1033-7B44-AC0F074E4100}\setup.exe

Filesize
701KB

MD5
27e83257fa97e04c210917a5ddb1385e

SHA1
d8185ca55768b9e98baab1eb5d758d2c9d791123

SHA256
3f8b77235d38f075d4b32f35556a1f9abe359a0a0f1afe170ca5aae4c626e041

SHA512
a31d5537ea3dc704065e522dfd910ca765947e6b2eeda52f9688a72df1a3d53aa392cb91bad9a1226032ae39e183ac1e1ed4ce0ab11e2982dd9883aeb033cb8d

Download Submit
memory/2748-11-0x0000000001CB0000-0x0000000001CB1000-memory.dmp

Filesize
4KB

Download
memory/2748-1-0x0000000000400000-0x00000000016A7000-memory.dmp

Filesize
18.7MB

Download
memory/2748-2-0x0000000000400000-0x00000000016A7000-memory.dmp

Filesize
18.7MB

Download
memory/2748-3-0x0000000001CB0000-0x0000000001CB1000-memory.dmp

Filesize
4KB

Download
memory/2748-0-0x0000000000400000-0x00000000016A7000-memory.dmp

Filesize
18.7MB

Download
memory/2748-10-0x0000000000400000-0x00000000016A7000-memory.dmp

Filesize
18.7MB

Download
memory/4844-15-0x0000000000400000-0x00000000016A7000-memory.dmp

Filesize
18.7MB

Download
memory/4844-21-0x0000000000400000-0x00000000016A7000-memory.dmp

Filesize
18.7MB

Download
memory/4844-14-0x0000000000400000-0x00000000016A7000-memory.dmp

Filesize
18.7MB

Download
memory/4844-9-0x0000000001B60000-0x0000000001B61000-memory.dmp

Filesize
4KB

Download
memory/4844-18-0x0000000000400000-0x00000000016A7000-memory.dmp

Filesize
18.7MB

Download
memory/4844-19-0x0000000000400000-0x00000000016A7000-memory.dmp

Filesize
18.7MB

Download
memory/4844-20-0x0000000000400000-0x00000000016A7000-memory.dmp

Filesize
18.7MB

Download
memory/4844-12-0x0000000000400000-0x00000000016A7000-memory.dmp

Filesize
18.7MB

Download
memory/4844-22-0x0000000000400000-0x00000000016A7000-memory.dmp

Filesize
18.7MB

Download
memory/4844-23-0x0000000000400000-0x00000000016A7000-memory.dmp

Filesize
18.7MB

Download
memory/4844-8-0x0000000000400000-0x00000000016A7000-memory.dmp

Filesize
18.7MB

Download
memory/4844-36-0x0000000000400000-0x00000000016A7000-memory.dmp

Filesize
18.7MB

Download
memory/4844-60-0x0000000000400000-0x00000000016A7000-memory.dmp

Filesize
18.7MB

Download
memory/4844-83-0x0000000000400000-0x00000000016A7000-memory.dmp

Filesize
18.7MB

Download
memory/4844-84-0x0000000000400000-0x00000000016A7000-memory.dmp

Filesize
18.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads