MALICIOUS — 83f00f7b89b424eb3d9d2d57b6946d1f0ab4a0cda4c5538272a300ec6a9b468f
MALICIOUS — 83f00f7b89b424eb3d9d2d57b6946d1f0ab4a0cda4c5538272a300ec6a9b468f is a pe sample analyzed by MalwareAnalyzer by Cyble with a malicious verdict (100/100), attributed to the Blocker family. 6 of 55 detection engines flagged it, exhibiting 5 ATT&CK techniques.
Identification
- SHA-256:
83f00f7b89b424eb3d9d2d57b6946d1f0ab4a0cda4c5538272a300ec6a9b468f - SHA-1:
a6e7f97a53846e9aa476983b4af76874faf4005e - MD5:
4396b9759ebebbbace14ae95aabcceb4 - imphash:
8d08b9aff260461badc1821f4f717247 - ssdeep:
196608:8bazg7DSmbazg7DSmbazg7DSmbazg7DSN:Tg7uVg7uVg7uVg7uN - TLSH:
T1ED69237E130B7403DE2AD62564863FCD08637C6D507D5888553F84BE83F68EB27816AA - Submitted as: 83f00f7b89b424eb3d9d2d57b6946d1f0ab4a0cda4c5538272a300ec6a9b468f
- File type: pe · Size: 8317440 bytes
- Verdict: malicious (100/100) · Family: Blocker
Detections (6 of 55 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 11 weighted signals:
- ClamAV (daily) flagged Win.Trojan.Mbrlock-9779766-0 (rule
Win.Trojan.Mbrlock-9779766-0) - engine signal, weight 0.90, confidence 0.95 - Memory forensics: 3 finding(s), e.g. process hollowing in 7D57AD13E21.ex (pid 660) (rule
windows.hollowprocesses.HollowProcesses) - memory signal, weight 0.70, confidence 0.85 - Dropped a malicious payload: OScam Collection.htm - dynamic signal, weight 0.62, confidence 0.90
- 2 behavioral detection(s): Registry Run Key Persistence [high] (rule
tl-run-key) - dynamic signal, weight 0.60, confidence 0.90 - 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 25 external host(s) at runtime (22 HTTP) - network signal, weight 0.40, confidence 0.80
- Anti-analysis: T1497, T1497.001, T1082, T1622 - dynamic signal, weight 0.40, confidence 0.75
- YARA: JPCERT/CC flagged JPCERT_HUILoader_PlugX_SideLoad (rule
JPCERT_HUILoader_PlugX_SideLoad) - 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)
18946 behavior events · 3 ATT&CK techniques · 8 dropped files.
Runtime network
- www.msftconnecttest.com
- rb.symcd.com
- rb.symcb.com
- inference.location.live.net
- to-do.office.com
- staging.to-do.officeppe.com
- teams.cloud.microsoft
- outlook.office.com
- outlook.office365.com
- outlook.cloud.microsoft
- sunray1975.zapto.org
- ctldl.windowsupdate.com
- login.live.com
- ocsp.digicert.com
- desktop-hsgcbep
- v20.events.data.microsoft.com
- config.edge.skype.com
- windows.msn.com
- oneocsp.microsoft.com
- www.msn.com
Dropped files
- C:\Users\analyst\AppData\Local\Temp\top2.gif -
7cb06f8dbfa5f13359e2dcee822fae73ef01a00ff29ce99ec401a73017875aee - C:\Users\analyst\AppData\Roaming\7D57AD13E21.exe -
f00b6472d3927e5b645e353827dcbd7ab0875cdc521caf8f4bc6fc30ca8720db - C:\Users\analyst\AppData\Local\Temp\OScam Collection.htm -
fcd785d06efc594628f2460b3098d5b97633f2e4587be0fa50dd8cd60a447407 - 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 - f647ad5887b1993d77bf5e2e6ab9f8ea77328ccf8f68fb78ffae77c1d8970310 -
f647ad5887b1993d77bf5e2e6ab9f8ea77328ccf8f68fb78ffae77c1d8970310
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/753bb2df-a166-494f-aa7d-5678b1ef0c56/pieceshash?cacheHostOrigin=dl.delivery.mp.microsoft.com
- http://203.26.79.13/filestreamingservice/files/753bb2df-a166-494f-aa7d-5678b1ef0c56?P1=1787786786&P2=404&P3=2&P4=EaX1kSTxjmrGAA%2fEFMkSfOp%2fW4BRAWFO054yPLF7WAvtmCJyLwgTRHjw%2bHbUFa254hqXndxrFavg54HhGdrW%2bg%3d%3d&cacheHostOrigin=msedge.b.tlu.dl.delivery.mp.microsoft.com
- http://203.26.79.13/filestreamingservice//files/c74a5353-3e6a-42b7-94d6-9b96c560c89a/pieceshash?cacheHostOrigin=dl.delivery.mp.microsoft.com
- http://203.26.79.13/filestreamingservice/files/c74a5353-3e6a-42b7-94d6-9b96c560c89a?P1=1787786823&P2=404&P3=2&P4=iAq2g8%2fRChYTF7DpZpxplNpfNNq9Bm55qemhXbWS9%2boILMAE26fQtBvDpvCcaXob%2fF0g642xJ8I8mdZc%2fzJQaQ%3d%3d&cacheHostOrigin=msedge.b.tlu.dl.delivery.mp.microsoft.com
Embedded domains
- hb.za
- sunray1975.zapto.org
Embedded IP addresses
- 4.150.223.99
- 57.155.101.212
- 4.230.171.124
- 20.247.184.142
- 74.179.77.204
- 135.233.95.135
- 20.50.201.206
- 20.236.44.162
- 40.104.4.2
- 52.123.128.14
- 40.84.97.4
- 203.26.79.13
- 52.110.12.19
- 52.123.252.241
- 135.232.92.34
- 52.110.12.24
- 52.123.252.246
- 135.233.45.221
- 52.123.252.203
- 52.148.114.188
- 172.178.240.163
- 72.153.5.139
- 92.223.78.30
- 52.110.12.48
- 52.110.12.53
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