5bd2f0540f6facd358ebd73b1b9edad5d825fee8816def9356354e4343ce220f

General

Target

5bd2f0540f6facd358ebd73b1b9edad5d825fee8816def9356354e4343ce220f.exe
Size

357KB
MD5

5209f601f75ee3e823f2e584f77b03f4
SHA1

755193138f704c9797df3880302f0abf81e53eba
SHA256

5bd2f0540f6facd358ebd73b1b9edad5d825fee8816def9356354e4343ce220f
SHA512

a3651f7410f0ef99e72dc071baf7f567b757828da6dced8283cf095729f3d7ac32688b7b949616b339c5649dd9f4ffb7558c4d9e9e8d77604c2af30c37935578
SSDEEP

6144:/rTfUHeeSKOS9ccFKk3Y9t9YZJqCBX+kqmCJds:/n8yN0Mr8ZJquUls

Score

9^/10

Malware Config

Signatures

UPX dump on OEP (original entry point) 21 IoCs

resource	yara_rule
behavioral2/files/0x0009000000023404-2.dat	UPX
behavioral2/memory/388-4-0x0000000000400000-0x00000000016A8E52-memory.dmp	UPX
behavioral2/memory/2368-7-0x0000000000400000-0x00000000016A8E52-memory.dmp	UPX
behavioral2/memory/388-6-0x0000000000400000-0x00000000016A8E52-memory.dmp	UPX
behavioral2/memory/2972-17-0x0000000000400000-0x00000000016A8E52-memory.dmp	UPX
behavioral2/memory/2972-20-0x0000000000400000-0x00000000016A8E52-memory.dmp	UPX
behavioral2/memory/2368-24-0x0000000000400000-0x00000000016A8E52-memory.dmp	UPX
behavioral2/memory/2368-27-0x0000000000400000-0x00000000016A8E52-memory.dmp	UPX
behavioral2/memory/2368-28-0x0000000000400000-0x00000000016A8E52-memory.dmp	UPX
behavioral2/files/0x0001000000022752-29.dat	UPX
behavioral2/memory/2368-32-0x0000000000400000-0x00000000016A8E52-memory.dmp	UPX
behavioral2/memory/2368-33-0x0000000000400000-0x00000000016A8E52-memory.dmp	UPX
behavioral2/memory/2368-38-0x0000000000400000-0x00000000016A8E52-memory.dmp	UPX
behavioral2/memory/2368-42-0x0000000000400000-0x00000000016A8E52-memory.dmp	UPX
behavioral2/memory/2368-48-0x0000000000400000-0x00000000016A8E52-memory.dmp	UPX
behavioral2/memory/2368-49-0x0000000000400000-0x00000000016A8E52-memory.dmp	UPX
behavioral2/memory/2368-59-0x0000000000400000-0x00000000016A8E52-memory.dmp	UPX
behavioral2/memory/2368-60-0x0000000000400000-0x00000000016A8E52-memory.dmp	UPX
behavioral2/memory/2368-71-0x0000000000400000-0x00000000016A8E52-memory.dmp	UPX
behavioral2/memory/2368-72-0x0000000000400000-0x00000000016A8E52-memory.dmp	UPX
behavioral2/memory/2368-81-0x0000000000400000-0x00000000016A8E52-memory.dmp	UPX

Checks computer location settings 2 TTPs 2 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2080292272-204036150-2159171770-1000\Control Panel\International\Geo\Nation	5bd2f0540f6facd358ebd73b1b9edad5d825fee8816def9356354e4343ce220f.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2080292272-204036150-2159171770-1000\Control Panel\International\Geo\Nation	Isass.exe

Executes dropped EXE 3 IoCs

pid	Process
2368	Isass.exe
2972	Isass.exe
2192	5bd2f0540f6facd358ebd73b1b9edad5d825fee8816def9356354e4343ce220f.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-1-5-21-2080292272-204036150-2159171770-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Isass.exe = "C:\\Users\\Public\\Microsoft Build\\Isass.exe"	5bd2f0540f6facd358ebd73b1b9edad5d825fee8816def9356354e4343ce220f.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Isass.exe = "C:\\Users\\Public\\Microsoft Build\\Isass.exe"	5bd2f0540f6facd358ebd73b1b9edad5d825fee8816def9356354e4343ce220f.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
388	5bd2f0540f6facd358ebd73b1b9edad5d825fee8816def9356354e4343ce220f.exe
388	5bd2f0540f6facd358ebd73b1b9edad5d825fee8816def9356354e4343ce220f.exe
2368	Isass.exe
2368	Isass.exe
2972	Isass.exe
2972	Isass.exe
2972	Isass.exe
2972	Isass.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 388 wrote to memory of 2368	388	5bd2f0540f6facd358ebd73b1b9edad5d825fee8816def9356354e4343ce220f.exe	82
PID 388 wrote to memory of 2368	388	5bd2f0540f6facd358ebd73b1b9edad5d825fee8816def9356354e4343ce220f.exe	82
PID 388 wrote to memory of 2368	388	5bd2f0540f6facd358ebd73b1b9edad5d825fee8816def9356354e4343ce220f.exe	82
PID 388 wrote to memory of 2972	388	5bd2f0540f6facd358ebd73b1b9edad5d825fee8816def9356354e4343ce220f.exe	83
PID 388 wrote to memory of 2972	388	5bd2f0540f6facd358ebd73b1b9edad5d825fee8816def9356354e4343ce220f.exe	83
PID 388 wrote to memory of 2972	388	5bd2f0540f6facd358ebd73b1b9edad5d825fee8816def9356354e4343ce220f.exe	83
PID 2972 wrote to memory of 2192	2972	Isass.exe	84
PID 2972 wrote to memory of 2192	2972	Isass.exe	84

C:\Users\Admin\AppData\Local\Temp\5bd2f0540f6facd358ebd73b1b9edad5d825fee8816def9356354e4343ce220f.exe
"C:\Users\Admin\AppData\Local\Temp\5bd2f0540f6facd358ebd73b1b9edad5d825fee8816def9356354e4343ce220f.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:388
- C:\Users\Public\Microsoft Build\Isass.exe
  "C:\Users\Public\Microsoft Build\Isass.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  PID:2368
- C:\Users\Public\Microsoft Build\Isass.exe
  "C:\Users\Public\Microsoft Build\Isass.exe" Tablet C:\Users\Admin\AppData\Local\Temp\5bd2f0540f6facd358ebd73b1b9edad5d825fee8816def9356354e4343ce220f.exe
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:2972
- - C:\Users\Admin\AppData\Local\Temp\5bd2f0540f6facd358ebd73b1b9edad5d825fee8816def9356354e4343ce220f.exe
    "C:\Users\Admin\AppData\Local\Temp\5bd2f0540f6facd358ebd73b1b9edad5d825fee8816def9356354e4343ce220f.exe"
    3⤵
    - Executes dropped EXE
    PID:2192

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

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\OneDrive\18.151.0729.0013\FileCoAuth.exe

Filesize
681KB

MD5
242f50607c1087d89ed1f501bea4851a

SHA1
8dfca81f09d81f2ce2e675ba48a1ed0aa5cb6d0e

SHA256
a6efedbc6666912d85d622720423aaa526763a16ef802c212a144307470ea758

SHA512
094d9caf261771ca995128312c3d122bfc8055fbe565c3ba367e50eaa07d36ddfc602efea826742df0d893f855e2127ab21b5644307c4e540e04957170b533ca

Download Submit
C:\Users\Admin\AppData\Local\Temp\5bd2f0540f6facd358ebd73b1b9edad5d825fee8816def9356354e4343ce220f.exe

Filesize
140KB

MD5
1793928d1c8daf03a8b67a60a0ffbd93

SHA1
c777c5be2321bf493877efef590eec8c822e2072

SHA256
84a2bb3191f370ba456dd8637e08cd47ef1c80a54d081881cd1e16a8c67f0238

SHA512
64ef94fb34b637c5d40878f4d3b0db7f2d74e89be35fca959ee9354cdf8f5bd61d90e8aa1ff795ddafe60ba5d1a0d4b57c41b1bf8750d24d685aa98f4142c11a

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

Filesize
216KB

MD5
189d4b2a83e17869255961df5c63933e

SHA1
5ea50055133566dce52e5dc262dba169d4aa1ac0

SHA256
305a51d23f4b2f395722608873e097a767ab74a0d75d31ec98a000fa4625842e

SHA512
960d9ab4ff1f6d4d8245d6b48a089d89c2b0976c8b10ec29e9a4df834f73b12262d5e7796f9a49c9e23b12d69d4740dba01bb8ea751072dd979307bc19a8517e

Download Submit
memory/388-4-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/388-6-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/2192-22-0x00000000005E0000-0x0000000000608000-memory.dmp

Filesize
160KB

Download
memory/2368-49-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/2368-38-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/2368-81-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/2368-24-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/2368-27-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/2368-28-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/2368-7-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/2368-32-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/2368-33-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/2368-72-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/2368-42-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/2368-48-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/2368-8-0x0000000001A80000-0x0000000001A81000-memory.dmp

Filesize
4KB

Download
memory/2368-59-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/2368-60-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/2368-71-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/2972-17-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download
memory/2972-20-0x0000000000400000-0x00000000016A8E52-memory.dmp

Filesize
18.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads