MALICIOUS — d453b09dd876a45d7baab6e0c0cdebc679d81ffe7a774006c275626c4991e553

MALICIOUS — d453b09dd876a45d7baab6e0c0cdebc679d81ffe7a774006c275626c4991e553 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: d453b09dd876a45d7baab6e0c0cdebc679d81ffe7a774006c275626c4991e553
SHA-1: 6026889085ce4daa96916ca528339350e1711981
MD5: 9966f3904cd4c19977e17c9571225aa7
imphash: f1a539a5b71ad53ac586f053145f08ec
ssdeep: 768:eyX3LKew369lp2z3Sd4baFXLjwP/Tgj93b8NIoy:egKcR4mjD9r82h
TLSH: T14B2ED0B07036D34CD372FC1960CDB9AEE1236D4A089D565729A0CA0ABC9057BC6F7B25
Submitted as: d453b09dd876a45d7baab6e0c0cdebc679d81ffe7a774006c275626c4991e553
File type: pe · Size: 29606 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:UPX
Microsoft Defender: Trojan:Win32/Prepscram!pz
Emsisoft (Emergency Kit): Gen:Variant.Virus.8
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
Dropped a malicious payload (Prepscram): CTS.exe - dynamic signal, weight 0.62, confidence 0.90
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.Virus.8 (rule Gen:Variant.Virus.8) - 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 5 HTTP request(s) at runtime - network signal, weight 0.40, confidence 0.80
Detect It Easy (packer/type) flagged DIE:UPX (rule DIE:UPX) - 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 - static signal, weight 0.25, confidence 0.55
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)

2445 behavior events · 1 ATT&CK techniques · 21 dropped files.

Dropped files

C:\Users\analyst\AppData\Local\Microsoft\OneDrive\OneDriveStandaloneUpdater.exe - 9123589bc5a446351cb3b094cd057197ce0e94d5e51bc8838d80cd9fd32df64e
C:\Users\analyst\AppData\Local\Microsoft\OneDrive\26.123.0628.0001\FileCoAuth.exe - e5d8ec26e371b293ca6e7f7cc6a77c447f8f0dee7dd3e41abb3195439c4e7727
C:\Users\analyst\AppData\Local\Microsoft\OneDrive\26.123.0628.0001\OneDrive.Sync.Service.exe - e857bcfc9508fffa9fd7de3a2c689f3e3113db4037bc4e37398bb966e905c8bc
C:\Users\analyst\AppData\Local\Microsoft\OneDrive\OneDrive.App.exe - 54f2ce8c30e96c1e1ef658e7459a4a0e571cf46a0a1c85292a6d5d4b13a8d32b
C:\Users\analyst\AppData\Local\Microsoft\OneDrive\OneDrive.exe - 36611bebb6f72ab1065002b19ceedde90ac50a8351112e46da7b26469311d506
C:\Users\analyst\AppData\Local\Microsoft\OneDrive\26.123.0628.0001\Microsoft.SharePoint.NativeMessagingClient.exe - 86cc50c1e02d9f93572f8a48dad912cfaad1681092c25feb19eca4b22a1719d1
C:\Users\analyst\AppData\Local\Microsoft\OneDrive\26.139.0720.0007\FileSyncConfig.exe - f9a8b2468c43409801100350e69948e3ff5673f71ac486fca5e83ae2ecdd7bd3
C:\Windows\CTS.exe - b612d46644d0e4a3829c4d6715f71d979103aa487624805363b36f5b4f92b118
C:\Users\analyst\AppData\Local\Microsoft\OneDrive\26.123.0628.0001\OneDriveUpdaterService.exe - 0f40a576181a56a4f1411f2813dc7bbeb220d5a2c10cc802600d3e9faea45fe6
C:\Users\analyst\AppData\Local\Microsoft\OneDrive\26.123.0628.0001\OneDriveLauncher.exe - 584b2939a23ee6be952a149e305f4af52fd82bb15e78ae84d04f7e2f91878fbe
C:\Users\analyst\AppData\Local\Temp\7pX82eKoNLndmyS.exe - c1cbddafecfd2ecd4927bbe05f68ebeacba8025507676fc5b467584dcf64e77e
C:\Users\analyst\AppData\Local\Microsoft\OneDrive\26.139.0720.0007\Microsoft.SharePoint.NativeMessagingClient.exe - 79779c614347af7070b0d7f351ca812a2374de63cc10e4fbb16c63337a4f8609
C:\Users\analyst\AppData\Local\Microsoft\OneDrive\26.123.0628.0001\FileSyncConfig.exe - 9ca60eb66ea903830903d04a59745358663377b55e0d0ecce21e3f05fac91a06
C:\Users\analyst\AppData\Local\Microsoft\OneDrive\26.139.0720.0007\FileSyncHelper.exe - 7974204ce601218debaa813f4d374d342d973f63ab29a47252b8db02c052933e
C:\Users\analyst\AppData\Local\Microsoft\OneDrive\26.123.0628.0001\FileSyncHelper.exe - 06fe5fe25faed88a0905446335e1706dc34e745d541b3c62b27bdcdaaceb3437

Embedded URLs

http://www.msftconnecttest.com/connecttest.txt
http://rb.symcd.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBTDRSYViRCZTxmZjLENmnwVjLly9QQU1MAGIknrOUvdk%2BJcobhHdglyA1gCEF0QyxjrOnkAh4OrdHf50xk%3D
http://rb.symcb.com/rb.crl

Embedded IP addresses

4.150.223.107
52.253.84.76
4.230.171.124
20.42.73.30
4.247.188.224
20.42.179.204
72.154.7.110
52.110.12.24
52.148.114.188
52.110.12.14

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Analyzed on MalwareAnalyzer by Cyble · Open interactive report