MALICIOUS — 2524a293fe5f4394f8c3cc551278b2a07dcd5f04bc36fef0c6301f8fdc342ea3

MALICIOUS — 2524a293fe5f4394f8c3cc551278b2a07dcd5f04bc36fef0c6301f8fdc342ea3 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: 2524a293fe5f4394f8c3cc551278b2a07dcd5f04bc36fef0c6301f8fdc342ea3
SHA-1: da151177267b870b95b9a3421ebdcf29b666e49b
MD5: dcf3f670c8c385bd87c6156fe9f40b0b
imphash: f1a539a5b71ad53ac586f053145f08ec
ssdeep: 768:eyX3LKew369lp2z3Sd4baFXLjwP/Tgj93b8NIoUxc1+/MdjdZmckR01GwJ2x:egKcR4mjD9r829cPdhZRXbJ2x
TLSH: T15D32F170706AE34CD337ED08B08EB9BD96126D4B5CC446A719608C097CE897B85FB620
Submitted as: 2524a293fe5f4394f8c3cc551278b2a07dcd5f04bc36fef0c6301f8fdc342ea3
File type: pe · Size: 45804 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.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
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 17 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: 3 finding(s) elsewhere in the guest, not attributed to this sample, e.g. process hidden from a listing (rule windows.psxview.PsXView) - memory signal, weight 0.05, confidence 0.30

Dynamic analysis (windows)

2448 behavior events · 1 ATT&CK techniques · 21 dropped files.

Dropped files

C:\Users\analyst\AppData\Local\Microsoft\OneDrive\26.123.0628.0001\FileSyncHelper.exe - 080f2734521efc35ca7568979f897d904e49fe6a351b0c6e2f8f6c8e25d9247e
C:\Users\analyst\AppData\Local\Microsoft\OneDrive\26.123.0628.0001\FileSyncConfig.exe - fa71ba0b2a5311f9d78e5762135cca0dd56664cebf85890368b8886838968ae0
C:\Users\analyst\AppData\Local\Microsoft\OneDrive\26.139.0720.0007\FileCoAuth.exe - e383ab59c491ee34dbee308a1e48316b313e2575eb191d163cc449ed262e8a5e
C:\Users\analyst\AppData\Local\Microsoft\OneDrive\26.123.0628.0001\FileCoAuth.exe - 5942a23481bc9c663cfc8bc474420b8512f1ba863fccd86c82ef9609673b6553
C:\Users\analyst\AppData\Local\Microsoft\OneDrive\26.123.0628.0001\OneDriveFileLauncher.exe - ba60b1f87e680e0b75a7c1185c4a75eda481e2ae5252c920a99544e003ed170a
C:\Windows\CTS.exe - b612d46644d0e4a3829c4d6715f71d979103aa487624805363b36f5b4f92b118
C:\Users\analyst\AppData\Local\Microsoft\OneDrive\OneDrive.exe - c9fc5f8093ef5bcd9726c57f285de3786f53307aca06a79e6148f20125a85a54
C:\Users\analyst\AppData\Local\Microsoft\OneDrive\26.123.0628.0001\OneDrivePatcher.exe - 503d852ed6827a421b26dafcb58e66b425587d9871890b5c019d170963cfb40d
C:\Users\analyst\AppData\Local\Microsoft\OneDrive\OneDriveStandaloneUpdater.exe - c1413360d2bf9a5511abfbeb241fd5a6eed49e5df43c2c0b2466631a07cbbd97
C:\Users\analyst\AppData\Local\Microsoft\OneDrive\26.123.0628.0001\OneDriveActionHelper.exe - 5a78376f0896ce04aff9926844c7743e1d2c328a4cb29dd182508d447ef0de71
C:\Users\analyst\AppData\Local\Microsoft\OneDrive\26.139.0720.0007\Microsoft.SharePoint.NativeMessagingClient.exe - 65cde5b0f7df9b6f1cab7d6e48f4ebf83592c8a7dcd5508a13566dd84faeea61
C:\Users\analyst\AppData\Local\Temp\0qnCiMWiNx1hf2u.exe - be91ef5f34744aca7ca45e58efead8977ecee48ef62dc54b2f58d63d496bd819
C:\Users\analyst\AppData\Local\Microsoft\OneDrive\26.123.0628.0001\OneDrive.Sync.Service.exe - 999c06f5628311f2a15391dfd6ceeb49e5e87f7bf116bc7d3aada053e4e5a414
C:\Users\analyst\AppData\Local\Microsoft\OneDrive\26.123.0628.0001\OneDriveLauncher.exe - d31dd9189e9ce1cccd2510dc3586622dacdf8e17413736e71adcb22905693b36
C:\Users\analyst\AppData\Local\Microsoft\OneDrive\26.123.0628.0001\Microsoft.SharePoint.NativeMessagingClient.exe - 2891492e8e0f64b99c507049deab0240a21645af167f4361510e09df49c7426d

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

40.79.167.9
4.144.132.114
52.123.252.212
4.230.171.124
20.42.179.204
4.247.188.233
52.110.12.18
52.110.12.26
52.148.114.188
72.145.35.111

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Analyzed on MalwareAnalyzer by Cyble · Open interactive report