MALICIOUS — 61ac5dc4ad1095d18c119d5086904e5c0517e3022f346012bfde0ff669b16f09

MALICIOUS — 61ac5dc4ad1095d18c119d5086904e5c0517e3022f346012bfde0ff669b16f09 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: 61ac5dc4ad1095d18c119d5086904e5c0517e3022f346012bfde0ff669b16f09
SHA-1: eb21c1770ed10f4724346b5c205f7554c0b7b32f
MD5: a7ad4c9d70b0dc9d01dc6def431e760b
imphash: f1a539a5b71ad53ac586f053145f08ec
ssdeep: 49152:S1lgNPRS4K2jYhGNyTGN5ZOSYQXppHdh7a9FirE0Wg38zG2l+:LFRS4V335ZvYQXpp9hOFirE0WXW
TLSH: T13C5933FE3CEC5E73C692B70B414E0DADA2410AC1E69DD6B0111B232992AD55388DF1ED
Submitted as: 61ac5dc4ad1095d18c119d5086904e5c0517e3022f346012bfde0ff669b16f09
File type: pe · Size: 1931664 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 20 HTTP request(s) at runtime - network signal, weight 0.40, confidence 0.80
Anti-analysis: T1497.001, T1082, T1622 - 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)

22482 behavior events · 3 ATT&CK techniques · 39 dropped files.

Dropped files

C:\Users\analyst\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\26C212D9399727259664BDFCA073966E_B7ED31D77D311A56FDCB56A0083B3E0B - 522ab15a3683c288ac72ef4d65ab03a700f8704504a93b54caf1b7cd02ef9586
C:\Users\analyst\AppData\Local\Microsoft\OneDrive\26.139.0720.0007\Microsoft.SharePoint.NativeMessagingClient.exe - 6eea92e4fea3a12b42479e713b20e070a70273b8582e9f68a54c457542d7d641
C:\Users\analyst\AppData\Local\Temp\bJsKXInbYaSnlJ9.exe - a8fb1a1473831ac6feb092afd2cbdded2d6a881d3576158fabd89090050b52f8
C:\Users\analyst\AppData\Local\Microsoft\OneDrive\26.123.0628.0001\FileSyncConfig.exe - 0164718ded73084fcc8c02160afe21f21e29acd171ce0fd0a6ac711567abc727
C:\Users\analyst\AppData\Local\Microsoft\OneDrive\26.139.0720.0007\FileSyncHelper.exe - bc517fc8b48ee67d4fa47addcb2f6668c829c0602bcc741bf422a7f83f1d0dc5
C:\Users\analyst\AppData\Local\Microsoft\OneDrive\26.123.0628.0001\OneDriveFileLauncher.exe - e01bb5eaace01c4541f5eeb2ea1f726a8c47a565436e5f442552c7d27ee743ae
C:\Users\analyst\AppData\Local\Microsoft\OneDrive\26.123.0628.0001\OneDrive.Sync.Service.exe - aa48f5e63ce3a33f96ab52cc063d390e761074f66a15fc6a3dc6203d02d6c9d0
C:\Users\analyst\AppData\Local\Microsoft\Internet Explorer\MSIMGSIZ.DAT - 611f78c4fa958ab1a2e10eb32303d6c9f488769c4cf71f538e817c38a52bdd49
C:\Users\analyst\AppData\Local\Microsoft\OneDrive\26.123.0628.0001\OneDriveActionHelper.exe - be62f36a556958bba3e22022116739c7d26be9a7e9ac3d1cc9cf29aaa1be7a6d
C:\Users\analyst\AppData\Local\Microsoft\Windows\INetCache\IE\9G746KYB\welcome_en[1] - aa1cf901a557492e9f95039ecf356b4e1451647b5e8538159fca4b0cbe289ea6
C:\Users\analyst\AppData\Local\Microsoft\OneDrive\OneDrive.App.exe - 3d97e27d713ab8ae4c30be30e36494d1e500fd32eedc02b363f34f6e8994ea8f
C:\Users\analyst\AppData\Local\Microsoft\OneDrive\26.123.0628.0001\FileSyncHelper.exe - d2dbe1a8918785c48429f2e3b030cb2667e13fc049022c16d7c66895367544a2
C:\Windows\CTS.exe - b612d46644d0e4a3829c4d6715f71d979103aa487624805363b36f5b4f92b118
C:\Users\analyst\AppData\Local\Microsoft\Windows\INetCache\IE\H9BOFF51\masthead_fill[1] - 155d2a08198237a22ed23dbb6babbd87a0d4f96ffdc73e0119ab14e5dd3b7e00
C:\Users\analyst\AppData\Local\Microsoft\OneDrive\26.123.0628.0001\FileCoAuth.exe - 65ba85ef0784a9aa892483b70a9c372c000bacc6892fd7239ed3726b143a0d84

Embedded URLs

http://www.msftconnecttest.com/connecttest.txt
http://rb.symcd.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBTDRSYViRCZTxmZjLENmnwVjLly9QQU1MAGIknrOUvdk%2BJcobhHdglyA1gCEF0QyxjrOnkAh4OrdHf50xk%3D
http://rb.symcb.com/rb.crl
http://javadl.oracle.com/webapps/download/GetFile/1.8.0_181-b13/96a7b8442fe848ef90c96a2fad6ed6d1/windows-i586/jre1.8.0_181full.msi
http://javadl.oracle.com/webapps/download/GetFile/1.8.0_181-b13/96a7b8442fe848ef90c96a2fad6ed6d1/windows-i586/au.msi
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

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

Embedded IP addresses

20.184.175.2
4.144.132.223
52.123.252.202
4.230.171.124
135.234.160.244
172.215.188.232
20.184.175.4
92.223.78.30
52.148.114.188
52.110.12.16
52.110.12.46
72.153.5.136

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Analyzed on MalwareAnalyzer by Cyble · Open interactive report