MALICIOUS — 824fa8125e607ece841844e30f83488bc2d94543e6e4aca1155a242ca1d4ae71

MALICIOUS — 824fa8125e607ece841844e30f83488bc2d94543e6e4aca1155a242ca1d4ae71 is a pe sample analyzed by MalwareAnalyzer by Cyble with a malicious verdict (100/100), attributed to the Prepscram family. 6 of 56 detection engines flagged it, exhibiting 2 ATT&CK techniques.

Identification

SHA-256: 824fa8125e607ece841844e30f83488bc2d94543e6e4aca1155a242ca1d4ae71
SHA-1: b8b5a60b52a3b88649e35bc313e60572a7e21b17
MD5: bcb38528faa74f8f5a5cc37be7966719
imphash: f1a539a5b71ad53ac586f053145f08ec
ssdeep: 3072:SKcWmjRrz3ZKcWmjRrz38T6X3HrtBTVIyu5y7jZ7Sq5TFd:hGyGdX3HZAGjhS2D
TLSH: T1CF3F12F49466E384E6B6B83C60449A5DB1038CCF55FC87D744C0991768AA1735BE3E70
Submitted as: 824fa8125e607ece841844e30f83488bc2d94543e6e4aca1155a242ca1d4ae71
File type: pe · Size: 154296 bytes
Verdict: malicious (100/100) · Family: Prepscram

Detections (6 of 56 engines)

MalwareAnalyser heuristics (entropy/packer): UPX
ClamAV (daily): Win.Malware.Zusy-9957983-0
Detect It Easy (packer/type): DIE:Microsoft Linker
Microsoft Defender: Trojan:Win32/Prepscram!pz
Emsisoft (Emergency Kit): Gen:Variant.Rootkit.25
Kaspersky (KVRT): Trojan.Win32.Agent.neyndy

MITRE ATT&CK

Why this verdict

The malicious score of 100/100 is the fusion of 12 weighted signals:

ClamAV (daily) flagged Win.Malware.Zusy-9957983-0 (rule Win.Malware.Zusy-9957983-0) - engine signal, weight 0.90, confidence 0.95
1 behavioral detection(s) across 1 rule(s): Registry Run Key Persistence [high] (rule tl-run-key) - dynamic signal, weight 0.60, confidence 0.90
Microsoft Defender flagged Trojan:Win32/Prepscram!pz (rule Trojan:Win32/Prepscram!pz) - engine signal, weight 0.55, confidence 0.85
Emsisoft (Emergency Kit) flagged Gen:Variant.Rootkit.25 (rule Gen:Variant.Rootkit.25) - engine signal, weight 0.55, confidence 0.85
Kaspersky (KVRT) flagged Trojan.Win32.Agent.neyndy (rule Trojan.Win32.Agent.neyndy) - engine signal, weight 0.55, confidence 0.85
Observed at runtime: Registry Run Key Persistence (T1547.001) (rule Registry Run Key Persistence) - dynamic signal, weight 0.40, confidence 0.90
Contacted 16 HTTP request(s) at runtime - network signal, weight 0.40, confidence 0.80
Detect It Easy (packer/type) flagged DIE:Microsoft Linker (rule DIE:Microsoft Linker) - engine signal, weight 0.35, confidence 0.70
MalwareAnalyser heuristics (entropy/packer) flagged UPX (rule UPX) - engine signal, weight 0.35, confidence 0.70
Packing/obfuscation: UPX, high-entropy-sections:UPX1, Microsoft Linker - static signal, weight 0.25, confidence 0.55
Dropped 19 executable file(s) at runtime - dynamic signal, weight 0.20, confidence 0.60
Memory forensics: 2 finding(s) elsewhere in the guest, not attributed to this sample, e.g. SSDT hook (rule windows.ssdt.SSDT) - memory signal, weight 0.05, confidence 0.30

Dynamic analysis (windows)

2424 behavior events · 1 ATT&CK techniques · 20 dropped files.

Dropped files

C:\Users\analyst\AppData\Local\Microsoft\OneDrive\OneDrive.exe - 4fbc8404ddfde4f3bc6feba9c83916ff9e765b55f93a6da68fee5d482fa2f3d0
C:\Users\analyst\AppData\Local\Microsoft\OneDrive\26.123.0628.0001\OneDriveLauncher.exe - a7945718a373572bb5aad6f71d634d3a535e36c849bcb2c516d353fc84f84622
C:\Users\analyst\AppData\Local\Microsoft\OneDrive\26.123.0628.0001\FileSyncConfig.exe - 6e2e69d42b28d195447080ca39692ce2c227a692a5bcca7da5d62adef1f5196a
C:\Users\analyst\AppData\Local\Microsoft\OneDrive\OneDrive.App.exe - 6b02a52996ac6bade29287fddf71e3a7a4aea81bd444a8c3675a6a1c387dee53
C:\Users\analyst\AppData\Local\Microsoft\OneDrive\26.123.0628.0001\OneDriveFileLauncher.exe - 0fbcd87955bdc9d7fb83fd1659d8157bf722cde508f415d9d42655970ebe48cd
C:\Users\analyst\AppData\Local\Microsoft\OneDrive\26.123.0628.0001\FileCoAuth.exe - 3b77281323b4a2679e0b350727ecf8bcd652e9350fac508b9ecadeefe00c1873
C:\Users\analyst\AppData\Local\Microsoft\OneDrive\26.123.0628.0001\Microsoft.SharePoint.NativeMessagingClient.exe - 366225c891347b337e29980260811bd4878db73d965e8bd0689951c6144320bf
C:\Users\analyst\AppData\Local\Microsoft\OneDrive\26.139.0720.0007\Microsoft.SharePoint.NativeMessagingClient.exe - 27be290623a48692a82d4bad5622632e9cf88a3170482bc3852fbf2da1fe3e3d
C:\Users\analyst\AppData\Local\Microsoft\OneDrive\26.123.0628.0001\FileSyncHelper.exe - 9e202e47a80bd8443ed005003b7433954ccf9097cb47d6454f44eb785d6c7f57
C:\Windows\CTS.exe - 8ce9064bd934626fad4bbd6e8f09386e43a730b1f9b80db88e7a9a5c65cdd482
C:\Users\analyst\AppData\Local\Microsoft\OneDrive\26.123.0628.0001\OneDrive.Sync.Service.exe - 27b1438e2d7865e45fb430d213ec85c28db37cc7243597fe557c29ee93719002
C:\Users\analyst\AppData\Local\Microsoft\OneDrive\26.123.0628.0001\OneDriveActionHelper.exe - a58e90f63a5aa24f84c662829fd3889ad965fe8187344d36d5d0e6e573d24cf8
C:\Users\analyst\AppData\Local\Microsoft\OneDrive\26.139.0720.0007\FileSyncHelper.exe - 0ca65d10ca6ebfb4d51b9269d6211d1fcfa06983e55780a49085bf43df88e7ad
C:\Users\analyst\AppData\Local\Microsoft\OneDrive\26.123.0628.0001\OneDrivePatcher.exe - 88395365b69189c90db8be5763726c122af2b3a18add45d31fc2fb6437719343
C:\Users\analyst\AppData\Local\Microsoft\OneDrive\26.139.0720.0007\FileCoAuth.exe - 48b20d6ebc6ec348c832336f58f6cc2003a098e53746f66610cfa256af6eb30f

Embedded URLs

http://www.msftconnecttest.com/connecttest.txt
http://rb.symcd.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBTDRSYViRCZTxmZjLENmnwVjLly9QQU1MAGIknrOUvdk%2BJcobhHdglyA1gCEF0QyxjrOnkAh4OrdHf50xk%3D
http://rb.symcb.com/rb.crl
http://c.pki.goog/r/r1.crl
http://x2.c.lencr.org/
http://ye.c.lencr.org/
http://c.pki.goog/wr2/9UVbN0w5E6Y.crl
http://yr.c.lencr.org/

Embedded domains

x1.c.lencr.org
x2.c.lencr.org
ye.c.lencr.org
yr.c.lencr.org

Embedded IP addresses

51.105.71.137
4.230.171.124
57.154.63.210
4.144.132.223
135.232.92.97
20.165.94.63
20.42.65.93
20.42.73.31
52.230.60.54
20.247.184.197
172.66.2.5
72.153.5.133
52.148.114.188
52.110.12.15
52.110.12.46

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Analyzed on MalwareAnalyzer by Cyble · Open interactive report