MALICIOUS — 206da609c2ad771db3065eef8d59ac8ba60a362816943188d349b015297306fa

MALICIOUS — 206da609c2ad771db3065eef8d59ac8ba60a362816943188d349b015297306fa 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 4 ATT&CK techniques.

Identification

SHA-256: 206da609c2ad771db3065eef8d59ac8ba60a362816943188d349b015297306fa
SHA-1: 11e39b9a833cc2709f7c4b3a6751c1387d6ec579
MD5: 654cc48a88bf252bad84441a27fa6498
imphash: f1a539a5b71ad53ac586f053145f08ec
ssdeep: 768:eyX3LKew369lp2z3Sd4baFXLjwP/Tgj93b8NIorgWWiMXgMQBlsKptK3:egKcR4mjD9r82wPM+l57K
TLSH: T1E432017429A7D204F6B7ED00208CADADF1631D4718C956C70AE49A183A5483FEAF7F10
Submitted as: 206da609c2ad771db3065eef8d59ac8ba60a362816943188d349b015297306fa
File type: pe · Size: 44136 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 15 weighted signals:

ClamAV (daily) flagged Win.Malware.Zusy-9957983-0 (rule Win.Malware.Zusy-9957983-0) - engine signal, weight 0.90, confidence 0.95
2 behavioral detection(s) across 2 rule(s): Registry Run Key Persistence [high] (rule tl-run-key) - dynamic signal, weight 0.63, confidence 0.90
Dropped a malicious payload (Prepscram): CTS.exe - dynamic signal, weight 0.62, 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
Observed at runtime: Windows Service (T1543.003) (rule Windows Service) - dynamic signal, weight 0.40, confidence 0.90
Contacted 3 external host(s) and 21 HTTP request(s) at runtime - network signal, weight 0.40, confidence 0.80
Anti-analysis: T1082 - dynamic signal, weight 0.40, confidence 0.75
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
Observed at runtime: Modify Registry (T1112) (rule Modify Registry) - dynamic signal, weight 0.12, confidence 0.90
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)

7215 behavior events · 3 ATT&CK techniques · 32 dropped files.

Dropped files

C:\Users\analyst\AppData\Local\Microsoft\OneDrive\OneDrive.exe - f4bdd46657761638382ce7ead406701a6cbf0dee9d94f137983db6c69f954920
C:\Users\analyst\AppData\Local\Microsoft\OneDrive\26.123.0628.0001\OneDrive.Sync.Service.exe - 69a4aa05140dd6a866f5b2ae3bb0293d1a05ffe3ca43e172aad31e324b94843e
C:\Users\analyst\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\8EDCF682921FE94F4A02A43CD1A28E6B - 4770dc8005ef5a574cb6f1f0f80a96769230a4ac1bc154def2cb77dadec881f2
C:\Users\analyst\AppData\Local\Microsoft\OneDrive\26.139.0720.0007\Microsoft.SharePoint.NativeMessagingClient.exe - f18a752a6f150b3fdf9a674484d0864d645300e25241683266cc923a4c16f9c9
C:\Users\analyst\AppData\Local\Microsoft\OneDrive\26.123.0628.0001\FileSyncConfig.exe - 5814b64905c50f51f298600b5b00c53ef37556e7e43bead5723940b7c7a80353
C:\Users\analyst\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8E4E510F44A56B8C8ECFEC352907C373_411140098D71F028134E9B8A21255C61 - b2405636f5826fd9b7fde48fe94136e5e94a99c82568dc446d71498dbff44155
C:\Users\analyst\AppData\Local\Microsoft\OneDrive\26.123.0628.0001\FileSyncHelper.exe - f19fa541f2ee08b5d10ad5d45d970f8399726fc04a6cb058bd8ede492ce3e0b2
C:\Users\analyst\AppData\Local\Microsoft\OneDrive\26.123.0628.0001\OneDriveActionHelper.exe - e9c20022ee02d20c082b08fcc9ac89365ff27ed53d957b75f21ca72de63c07d1
C:\Windows\CTS.exe - b612d46644d0e4a3829c4d6715f71d979103aa487624805363b36f5b4f92b118
C:\Users\analyst\AppData\Local\Microsoft\OneDrive\OneDrive.App.exe - 2a3e296b58ecc1c920f9a643461bf602f8148b8e4d9d1703b464b52a1c815688
C:\Users\analyst\AppData\Local\Microsoft\OneDrive\26.123.0628.0001\OneDriveUpdaterService.exe - 2ff1881977cf0410ff623976aade1f323bcae1f308b913451ecc9aa80afbd405
C:\Users\analyst\AppData\Local\Microsoft\OneDrive\26.123.0628.0001\OneDriveLauncher.exe - 0945a0f9d57ee18636044edbc428d71529a1c8f56caa1a47b92064e1a1c78fda
C:\Users\analyst\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8EDCF682921FE94F4A02A43CD1A28E6B - 7e62f5b7442e56b3dde8191961099ed67194b59db514f94b3de7d99ddae496cd
C:\Users\analyst\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\CD9C747F40EEA288D73938D33144F716 - 6de66f00303bce8e43663b72baccead01907ea74658957b0d7ed29c91e75099c
C:\Users\analyst\AppData\Local\Microsoft\OneDrive\26.123.0628.0001\Microsoft.SharePoint.NativeMessagingClient.exe - 1adf34943ff206c31400ba81c0b37599f9dc9cee70e0e96aa00c5cffcc2e0ee6

Embedded URLs

http://www.msftconnecttest.com/connecttest.txt
http://rb.symcd.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBTDRSYViRCZTxmZjLENmnwVjLly9QQU1MAGIknrOUvdk%2BJcobhHdglyA1gCEF0QyxjrOnkAh4OrdHf50xk%3D
http://rb.symcb.com/rb.crl
http://th.symcd.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBRsif7263KedmR2MLuYKv9%2BWQCtWAQU1A1lP3q9NMb%2BR%2BdMDcC98t4Vq3ECEBT4%2FdFn%2BSQCsVcLXcSVyBU%3D
http://th.symcb.com/th.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

51.116.246.105
4.230.171.124
48.211.4.16
52.230.60.54
74.179.77.164
20.184.175.21
74.178.76.128
20.165.94.63
172.64.154.167
172.66.2.5
52.110.12.31
52.110.12.49
20.184.175.6
85.210.193.152
72.153.5.136
52.148.114.188
52.110.12.47
52.110.12.4

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Analyzed on MalwareAnalyzer by Cyble · Open interactive report