MALICIOUS — 9a3b17033c7c340651ac59dadf68a3c75ac0695e943c596b9ea97978482ac01d

MALICIOUS — 9a3b17033c7c340651ac59dadf68a3c75ac0695e943c596b9ea97978482ac01d is a pe sample analyzed by MalwareAnalyzer by Cyble with a malicious verdict (100/100), attributed to the Vobfus family. 5 of 56 detection engines flagged it, exhibiting 4 ATT&CK techniques.

Identification

SHA-256: 9a3b17033c7c340651ac59dadf68a3c75ac0695e943c596b9ea97978482ac01d
SHA-1: e853ec4c5f2faba765d3d49effa5beaff5d5dc2a
MD5: e7fd869ebec844fb05df9e286ca68e4f
imphash: b806352ebc796e5060cd13bc5e12711d
ssdeep: 1536:nKl0ccTBnsOB+dGrNjjmJ2NuKuFr1M5B4QbCcI8p:/TBsOB++jOWBp
TLSH: T1723B91D40CE8D0A1CEA497878E4469FC058EEDABB222507419C9AA1BD7C21FF507E15F
Submitted as: 9a3b17033c7c340651ac59dadf68a3c75ac0695e943c596b9ea97978482ac01d
File type: pe · Size: 102400 bytes
Verdict: malicious (100/100) · Family: Vobfus

Detections (5 of 56 engines)

ClamAV (daily): Win.Trojan.Changeup-6169544-0
Microsoft Defender: Worm:Win32/Vobfus.EH
Emsisoft (Emergency Kit): Gen:Variant.Injector.836
Trellix Stinger (McAfee): W32/Autorun.worm.ru
Kaspersky (KVRT): Trojan.Win32.Jorik.Vobfus.ahog

MITRE ATT&CK

Why this verdict

The malicious score of 100/100 is the fusion of 13 weighted signals:

ClamAV (daily) flagged Win.Trojan.Changeup-6169544-0 (rule Win.Trojan.Changeup-6169544-0) - engine signal, weight 0.90, confidence 0.95
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 Worm:Win32/Vobfus.EH (rule Worm:Win32/Vobfus.EH) - engine signal, weight 0.55, confidence 0.85
Emsisoft (Emergency Kit) flagged Gen:Variant.Injector.836 (rule Gen:Variant.Injector.836) - engine signal, weight 0.55, confidence 0.85
Trellix Stinger (McAfee) flagged W32/Autorun.worm.ru (rule W32/Autorun.worm.ru) - engine signal, weight 0.55, confidence 0.85
Kaspersky (KVRT) flagged Trojan.Win32.Jorik.Vobfus.ahog (rule Trojan.Win32.Jorik.Vobfus.ahog) - 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 2 external host(s) and 21 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
Dropped 1 executable file(s) at runtime - dynamic signal, weight 0.20, confidence 0.60
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)

50539 behavior events · 3 ATT&CK techniques · 4 dropped files.

Dropped files

C:\Users\analyst\laayae.exe - 95f43b3e7f06b347d46e199b7ed2e3734347faa7ae02b0c6a5dc5fde29c0c57a
ba95d30ffcb21d071ceb4240111998c21c4a6cb538cdcb6e5e6f2474e94c87b6 - ba95d30ffcb21d071ceb4240111998c21c4a6cb538cdcb6e5e6f2474e94c87b6
f901ea3257cbc5afdeef22ea77ce89171765fc133d286c84ed132456efd3bea6 - f901ea3257cbc5afdeef22ea77ce89171765fc133d286c84ed132456efd3bea6
99c5f7c13e82ae8f84b074f5599512687155163ee9221aaab996ddf5da03210a - 99c5f7c13e82ae8f84b074f5599512687155163ee9221aaab996ddf5da03210a

Embedded URLs

http://www.msftconnecttest.com/connecttest.txt
http://rb.symcd.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBTDRSYViRCZTxmZjLENmnwVjLly9QQU1MAGIknrOUvdk%2BJcobhHdglyA1gCEF0QyxjrOnkAh4OrdHf50xk%3D
http://rb.symcb.com/rb.crl
http://203.26.79.13/filestreamingservice//files/afb4c1e7-5ab6-4274-bbe6-fa4639876844/pieceshash?cacheHostOrigin=dl.delivery.mp.microsoft.com
http://203.26.79.13/filestreamingservice/files/afb4c1e7-5ab6-4274-bbe6-fa4639876844?P1=1787350513&P2=404&P3=2&P4=hPXnleCiB9KFQ4NRbqYeeghmod3YwFu3rr9u1dSWiMPau3fH8ayNmoxsXeGYw0HQYtbTaDTHKbjAVSOC%2b0lU%2bA%3d%3d&cacheHostOrigin=tlu.dl.delivery.mp.microsoft.com
http://203.26.79.13/filestreamingservice//files/6c2dbffa-872a-4f74-b39c-0ab782eea5bf/pieceshash?cacheHostOrigin=dl.delivery.mp.microsoft.com
http://203.26.79.13/filestreamingservice/files/6c2dbffa-872a-4f74-b39c-0ab782eea5bf?P1=1787354299&P2=404&P3=2&P4=ElLaAGSqvHE%2fud1oOy9cHTUmePvNSsovOeUG0kb6%2bBU6%2b%2bMYS0cpPMllI2X7kLzG0p4YKwEcdFNAK2Q5UFj2GA%3d%3d&cacheHostOrigin=tlu.dl.delivery.mp.microsoft.com
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/
http://c.pki.goog/r/gsr1.crl
http://c.pki.goog/r/r4.crl

Embedded domains

ns1.spansearcher.net
ns1.spinsearcher.org
ns1.player1352.net
x1.c.lencr.org
x2.c.lencr.org
ye.c.lencr.org
yr.c.lencr.org
default.exp-tas.com

Embedded IP addresses

52.168.112.67
52.123.252.236
52.253.84.76
4.230.171.124
74.178.76.128
48.211.4.16
135.233.95.135
52.182.141.63
172.64.154.167
172.175.111.170
40.84.85.40
135.234.160.245
203.26.79.13
4.150.223.101
4.150.223.115
40.79.163.154
20.184.175.11
20.184.175.2
52.148.114.188
172.172.255.218
52.110.12.2
52.110.12.16
72.154.7.16

File paths

C:\Program
C:\Windows\system32;C:\Windows\system;

More Vobfus samples · Latest analyzed threats · ATT&CK coverage

Analyzed on MalwareAnalyzer by Cyble · Open interactive report