00d47f176dc88dfc6307a4edf1e72e0514be9e4973b51525b610bc603440a43b

General

Target

f8a480f1304242c8d73a6350a28654cc_JC.exe
Size

216KB
MD5

f8a480f1304242c8d73a6350a28654cc
SHA1

08700fc03bb050b5a49a7bc12463b464f9143b45
SHA256

00d47f176dc88dfc6307a4edf1e72e0514be9e4973b51525b610bc603440a43b
SHA512

2b982d0b7a943e1b469b00b50e3c41d514d8c9229f577120de6f12f1391a84859124f777fcdd5288be16de0e8b2c3fff9b0e334cb4673033196b41d24703d729
SSDEEP

3072:SPUHpiKT2t2UHIu05W7SAFJJOUD9cckiKop97f3r8n9t9Ygntwwx:/rTfUHeeSKOS9ccFKk3Y9t9YZwx

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2516	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-1-5-21-1141987721-3945596982-3297311814-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Isass.exe = "C:\\Users\\Public\\Microsoft Build\\Isass.exe"	f8a480f1304242c8d73a6350a28654cc_JC.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Isass.exe = "C:\\Users\\Public\\Microsoft Build\\Isass.exe"	f8a480f1304242c8d73a6350a28654cc_JC.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
664	f8a480f1304242c8d73a6350a28654cc_JC.exe
664	f8a480f1304242c8d73a6350a28654cc_JC.exe
2516	Isass.exe
2516	Isass.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 664 wrote to memory of 2516	664	f8a480f1304242c8d73a6350a28654cc_JC.exe	83
PID 664 wrote to memory of 2516	664	f8a480f1304242c8d73a6350a28654cc_JC.exe	83
PID 664 wrote to memory of 2516	664	f8a480f1304242c8d73a6350a28654cc_JC.exe	83

C:\Users\Admin\AppData\Local\Temp\f8a480f1304242c8d73a6350a28654cc_JC.exe
"C:\Users\Admin\AppData\Local\Temp\f8a480f1304242c8d73a6350a28654cc_JC.exe"
1⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:664
- C:\Users\Public\Microsoft Build\Isass.exe
  "C:\Users\Public\Microsoft Build\Isass.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  PID:2516

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:\Users\Public\Microsoft Build\Isass.exe

Filesize
216KB

MD5
f8a480f1304242c8d73a6350a28654cc

SHA1
08700fc03bb050b5a49a7bc12463b464f9143b45

SHA256
00d47f176dc88dfc6307a4edf1e72e0514be9e4973b51525b610bc603440a43b

SHA512
2b982d0b7a943e1b469b00b50e3c41d514d8c9229f577120de6f12f1391a84859124f777fcdd5288be16de0e8b2c3fff9b0e334cb4673033196b41d24703d729

Download Submit
C:\Users\Public\Microsoft Build\Isass.exe

Filesize
216KB

MD5
f8a480f1304242c8d73a6350a28654cc

SHA1
08700fc03bb050b5a49a7bc12463b464f9143b45

SHA256
00d47f176dc88dfc6307a4edf1e72e0514be9e4973b51525b610bc603440a43b

SHA512
2b982d0b7a943e1b469b00b50e3c41d514d8c9229f577120de6f12f1391a84859124f777fcdd5288be16de0e8b2c3fff9b0e334cb4673033196b41d24703d729

Download Submit
C:\odt\office2016setup.exe

Filesize
5.3MB

MD5
1c6811ae18600d71ef107fef4542de33

SHA1
cfb4d7c9f3273a6ac679a0955e5216c52b88b444

SHA256
cd7e454f6d81b8266c7e22780cbd44c0c1ed2997b5208bb64597c46c7fa29167

SHA512
7713c181da52bd77c28fa88f80b0c87bd5d8b74a424f57c4a07b304a9d9ee7816559095632777a5093ef5917dbb45e99a769381857adc3b69b9d0848b34ed662

Download Submit
memory/664-7-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/664-5-0x0000000001BB0000-0x0000000001BB1000-memory.dmp

Filesize
4KB

Download
memory/664-1-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/2516-17-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/2516-28-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/2516-10-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/2516-13-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/2516-8-0x0000000001BF0000-0x0000000001BF1000-memory.dmp

Filesize
4KB

Download
memory/2516-6-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/2516-21-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/2516-22-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/2516-27-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/2516-9-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/2516-34-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/2516-38-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/2516-45-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/2516-46-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/2516-54-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/2516-55-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/2516-64-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads