MALICIOUS — 75aecef91184b22ef1afe3bdb0ae8c3072dfe1fa08356dd13e2c9899dc7eaf2e

MALICIOUS — 75aecef91184b22ef1afe3bdb0ae8c3072dfe1fa08356dd13e2c9899dc7eaf2e is a pe sample analyzed by MalwareAnalyzer by Cyble with a malicious verdict (100/100), attributed to the Mbrlock family. 6 of 56 detection engines flagged it, exhibiting 5 ATT&CK techniques.

Identification

SHA-256: 75aecef91184b22ef1afe3bdb0ae8c3072dfe1fa08356dd13e2c9899dc7eaf2e
SHA-1: fa646dc88be0b157fc3db43f5ea57fd3d304354e
MD5: f9ee681140ccd3035f263892549ea284
imphash: 8d08b9aff260461badc1821f4f717247
ssdeep: 196608:86azg7DSm6azg7DSmZ6azg7DSm6azg7DSmo:Ig7uqg7uMg7uqg7uj
TLSH: T1F06A137E130B7403DE3AD62554862FCD0463BCAD507D5888553B84BE93F6CEB27806AA
Submitted as: 75aecef91184b22ef1afe3bdb0ae8c3072dfe1fa08356dd13e2c9899dc7eaf2e
File type: pe · Size: 9338880 bytes
Verdict: malicious (100/100) · Family: Mbrlock

Detections (6 of 56 engines)

capa (capabilities): capability:collection/keylog
ClamAV (daily): Win.Trojan.Mbrlock-9779766-0
YARA: JPCERT/CC: JPCERT_HUILoader_PlugX_SideLoad
Microsoft Defender: Trojan:Win32/Blocker.EM!MTB
Emsisoft (Emergency Kit): Gen:Variant.Genie.689
Kaspersky (KVRT): HEUR:Trojan.Win32.Agent.gen

MITRE ATT&CK

Why this verdict

The malicious score of 100/100 is the fusion of 14 weighted signals:

ClamAV (daily) flagged Win.Trojan.Mbrlock-9779766-0 (rule Win.Trojan.Mbrlock-9779766-0) - 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: OScam Collection.htm - dynamic signal, weight 0.62, confidence 0.90
Microsoft Defender flagged Trojan:Win32/Blocker.EM!MTB (rule Trojan:Win32/Blocker.EM!MTB) - engine signal, weight 0.55, confidence 0.85
Emsisoft (Emergency Kit) flagged Gen:Variant.Genie.689 (rule Gen:Variant.Genie.689) - engine signal, weight 0.55, confidence 0.85
Kaspersky (KVRT) flagged HEUR:Trojan.Win32.Agent.gen (rule HEUR:Trojan.Win32.Agent.gen) - engine signal, weight 0.55, confidence 0.85
YARA: JPCERT/CC flagged JPCERT_HUILoader_PlugX_SideLoad (rule JPCERT_HUILoader_PlugX_SideLoad) - engine signal, weight 0.60, confidence 0.70
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
capture keystrokes (rule capture keystrokes) - capa signal, weight 0.40, confidence 0.80
Contacted 4 external host(s) and 21 HTTP request(s) at runtime - network signal, weight 0.40, confidence 0.80
Anti-analysis: T1497, T1497.001, T1082, T1622 - dynamic signal, weight 0.40, confidence 0.75
capa (capabilities) flagged capability:collection/keylog (rule capability:collection/keylog) - engine signal, weight 0.35, confidence 0.70
Observed at runtime: Modify Registry (T1112) (rule Modify Registry) - dynamic signal, weight 0.12, confidence 0.90

Dynamic analysis (windows)

22350 behavior events · 3 ATT&CK techniques · 8 dropped files.

Dropped files

C:\Users\analyst\AppData\Local\Temp\top2.gif - 7cb06f8dbfa5f13359e2dcee822fae73ef01a00ff29ce99ec401a73017875aee
C:\Users\analyst\AppData\Local\Temp\OScam Collection.htm - fcd785d06efc594628f2460b3098d5b97633f2e4587be0fa50dd8cd60a447407
C:\Users\analyst\AppData\Roaming\7D57AD13E21.exe - 672ea685d795a0449fb6f3796aabcd6e683e4eec002575d82b4275707def8ab1
C:\Users\analyst\AppData\Local\Microsoft\Internet Explorer\MSIMGSIZ.DAT - b0715c24eef4c3d20c812bb858a4e50569a836f0217c7652fb350be953e5f50d
C:\Users\analyst\AppData\Roaming\Scegli_nome_allegato.exe - ab01a333f38605cbcebd80e0a84ffae2803a9b4f6bebb1e9f773e949a87cb420
ca517a62cc4bd322c4afb74599b3f4a6f414d0fb6f750eae56a0d9c95d997f49 - ca517a62cc4bd322c4afb74599b3f4a6f414d0fb6f750eae56a0d9c95d997f49
0367653f24003fae1324a91b98f41caabdd5d8578a49132aa0222f02d2a106c5 - 0367653f24003fae1324a91b98f41caabdd5d8578a49132aa0222f02d2a106c5
377d41f508a9dcbbe8cdde78c0f02d43996a4e03bf2089bc4bc48e09f180dbff - 377d41f508a9dcbbe8cdde78c0f02d43996a4e03bf2089bc4bc48e09f180dbff

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/ea98f53a-04cb-4f17-b9d9-db88a4e098c7/pieceshash?cacheHostOrigin=dl.delivery.mp.microsoft.com
http://203.26.79.13/filestreamingservice/files/ea98f53a-04cb-4f17-b9d9-db88a4e098c7?P1=1785377842&P2=404&P3=2&P4=l1E6ID%2bdP67CJpKOjU%2fX%2fGF9WXhFVyGpnE3i5Cg1PBeyqvAXwFOIHh5%2fQdq0yf4r1ZEEidf68dZXH8WxKtak%2fA%3d%3d&cacheHostOrigin=1D.tlu.dl.delivery.mp.microsoft.com
http://c.pki.goog/r/gsr1.crl
http://c.pki.goog/r/r4.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/
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

Embedded domains

hb.za
x1.c.lencr.org
x2.c.lencr.org
ye.c.lencr.org
yr.c.lencr.org
sunray1975.zapto.org

Embedded IP addresses

20.184.175.10
52.123.252.238
4.230.171.124
4.247.188.224
135.232.92.97
4.247.188.233
20.247.184.197
74.179.77.204
52.168.117.170
52.110.12.22
52.110.12.37
52.123.252.236
48.199.12.1
20.89.1.10
34.104.35.123
172.64.154.167
203.26.79.13
48.192.143.121
20.184.175.14
125.56.205.26
125.56.205.25
52.148.114.188
72.154.7.97
51.116.253.168
52.110.12.52

File paths

B:\:t:
X:\:`:d:h:l:p:t:
X:\:`:d:h:l:p:t:x:
J:\:`:d:h:
I:\ba

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Analyzed on MalwareAnalyzer by Cyble · Open interactive report