MALICIOUS — a1081854e7251145d10d5dac68ea93a1989f6103b176ac7cd4448c28b9b5e3e0

MALICIOUS — a1081854e7251145d10d5dac68ea93a1989f6103b176ac7cd4448c28b9b5e3e0 is a pe sample analyzed by MalwareAnalyzer by Cyble with a malicious verdict (100/100), attributed to the Zusy family. 6 of 56 detection engines flagged it, exhibiting 2 ATT&CK techniques.

Identification

SHA-256: a1081854e7251145d10d5dac68ea93a1989f6103b176ac7cd4448c28b9b5e3e0
SHA-1: 0f8c1d45b190052b89036916ce5215b9852afe92
MD5: 6f5cd4875279466c30b05188a8c0c799
imphash: f1a539a5b71ad53ac586f053145f08ec
ssdeep: 768:eyX3LKew369lp2z3Sd4baFXLjwP/Tgj93b8NIoG4oDq6yfIxEYcN6+kv1Yn:egKcR4mjD9r82u6TSN+2
TLSH: T1CD31F23070769304D3B1791C708E7ABFD032AD4B19E996D72AB0C649EC50597C2F6B15
Submitted as: a1081854e7251145d10d5dac68ea93a1989f6103b176ac7cd4448c28b9b5e3e0
File type: pe · Size: 42341 bytes
Verdict: malicious (100/100) · Family: Zusy

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.Rootkit.25
Kaspersky (KVRT): Trojan.Win32.Agent.neyndy

MITRE ATT&CK

Why this verdict

The malicious score of 100/100 is the fusion of 11 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.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 2 external host(s) and 6 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

Dynamic analysis (windows)

2452 behavior events · 1 ATT&CK techniques · 21 dropped files.

Dropped files

C:\Users\analyst\AppData\Local\Microsoft\OneDrive\26.123.0628.0001\OneDrive.Sync.Service.exe - 2a8da4b4bc31790fe7142e238b61290d22f0047f88378ef9dcd87d1c41c69041
C:\Users\analyst\AppData\Local\Microsoft\OneDrive\26.123.0628.0001\OneDriveUpdaterService.exe - a8787dc6c8e2a7acdaa286efb1410e98fc06facb93e9394bb0e5e47d2ced8e5d
C:\Users\analyst\AppData\Local\Microsoft\OneDrive\26.123.0628.0001\FileCoAuth.exe - 7c28c18d7b7d87d5e26621b1a4b3a9274db4a4b4ff3bc0c094f1c515400c0d04
C:\Users\analyst\AppData\Local\Microsoft\OneDrive\OneDriveStandaloneUpdater.exe - 2b462ff9caeb992200be20a54e7c119335e5fe418d30d3035de7ebdfc891d0e6
C:\Users\analyst\AppData\Local\Microsoft\OneDrive\26.123.0628.0001\OneDriveFileLauncher.exe - 9fb8326f5d34e41423466c191518b2f9ff3f665cd8eda05676c20b1cf0df5a78
C:\Users\analyst\AppData\Local\Microsoft\OneDrive\26.123.0628.0001\OneDrivePatcher.exe - 5b1ff46f487fc081b04976047754dac5d9bd1a873e64bbd5e265416693f00357
C:\Windows\CTS.exe - b612d46644d0e4a3829c4d6715f71d979103aa487624805363b36f5b4f92b118
C:\Users\analyst\AppData\Local\Microsoft\OneDrive\OneDrive.exe - 85dc8588a24af9e6ca2c7b8ca2af52e03f01f68cad95556db1e3c9da1bc7212f
C:\Users\analyst\AppData\Local\Microsoft\OneDrive\26.139.0720.0007\FileCoAuth.exe - fd440ee72d3f9a4fa12f65fb82df05bc2449359ae835cd82fc9aec8efeeb2f98
C:\Users\analyst\AppData\Local\Microsoft\OneDrive\26.123.0628.0001\FileSyncHelper.exe - a574fe36eab61358e5e37d73fee4c8f7042c8b3e072584fb254c4fefbe760302
C:\Users\analyst\AppData\Local\Microsoft\OneDrive\26.139.0720.0007\FileSyncConfig.exe - abaeff3774fd472c34ec782f4bb386456c3c37ebb9dbc6d5aa13e835050fa87a
C:\Users\analyst\AppData\Local\Microsoft\OneDrive\26.139.0720.0007\FileSyncHelper.exe - 17902251fc1741c887cef8141bc13fd1a972f3c8a2d844c01fde5992a88018b6
C:\Users\analyst\AppData\Local\Microsoft\OneDrive\26.123.0628.0001\OneDriveActionHelper.exe - d0da0c47bb1be99f1a30d12b8864bb8642b15f7411384b6cb9f6bee90a8a1f85
C:\Users\analyst\AppData\Local\Microsoft\OneDrive\26.123.0628.0001\Microsoft.SharePoint.NativeMessagingClient.exe - 32b4520e0540bd06b12dc02568831ebeefb0ec121565da1f5f4074f9f434f552
C:\Users\analyst\AppData\Local\Microsoft\OneDrive\26.123.0628.0001\OneDriveLauncher.exe - 1c374c1804db73678ef1d2c655ef08f5a5fb3e6062dc54dd6805b1bf5837209a

Embedded URLs

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

Embedded IP addresses

52.168.117.175
52.123.252.239
4.247.188.224
4.230.171.124
4.144.132.114
135.233.95.135
74.178.76.128
104.18.33.89
20.42.73.27
52.110.12.8
52.110.12.47
20.184.175.16
72.153.5.130
52.148.114.188
52.110.12.22
52.110.12.30

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Analyzed on MalwareAnalyzer by Cyble · Open interactive report