MALICIOUS — 55a45930458f3cf095c236743009bdb3f6f98c47e36c6dc6aa027528ad8ccbe6

MALICIOUS — 55a45930458f3cf095c236743009bdb3f6f98c47e36c6dc6aa027528ad8ccbe6 is a pe sample analyzed by MalwareAnalyzer by Cyble with a malicious verdict (100/100), attributed to the Blocker family. 6 of 56 detection engines flagged it, exhibiting 4 ATT&CK techniques.

Identification

SHA-256: 55a45930458f3cf095c236743009bdb3f6f98c47e36c6dc6aa027528ad8ccbe6
SHA-1: fa09340cbb0f92ff9bd683effc4a0bef9db3a07d
MD5: dca19d28ed8282dcc32e308d7189f3a9
imphash: 8d08b9aff260461badc1821f4f717247
ssdeep: 196608:8jazg7DSmjazg7DSmjazg7DSFjazg7DSmjazg7DSmjazg7DSc:bg7u1g7u1g7uCg7u1g7u1g7uc
TLSH: T1796D237E130B7403DE3AD62564862F8D08237C6D507D5888553F84BE93F6CEB27816AA
Submitted as: 55a45930458f3cf095c236743009bdb3f6f98c47e36c6dc6aa027528ad8ccbe6
File type: pe · Size: 12222464 bytes
Verdict: malicious (100/100) · Family: Blocker

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): Trojan-Ransom.Win32.Blocker.rkxt

MITRE ATT&CK

Why this verdict

The malicious score of 100/100 is the fusion of 15 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: 1 finding(s) attributed to the sample across 1 technique(s), e.g. process hollowing in 7D57AD13E21.ex (pid 3932) (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
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 Trojan-Ransom.Win32.Blocker.rkxt (rule Trojan-Ransom.Win32.Blocker.rkxt) - 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: Windows Service (T1543.003) (rule Windows Service) - dynamic signal, weight 0.40, confidence 0.90
1 behavioral detection(s) across 1 rule(s): Windows Service Installation [medium] (rule tl-service-install) - dynamic signal, weight 0.40, confidence 0.90
capture keystrokes (rule capture keystrokes) - capa signal, weight 0.40, confidence 0.80
Contacted 16 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
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)

21178 behavior events · 2 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\Local\Microsoft\Internet Explorer\MSIMGSIZ.DAT - b0715c24eef4c3d20c812bb858a4e50569a836f0217c7652fb350be953e5f50d
C:\Users\analyst\AppData\Roaming\Scegli_nome_allegato.exe - ab01a333f38605cbcebd80e0a84ffae2803a9b4f6bebb1e9f773e949a87cb420
C:\Users\analyst\AppData\Roaming\7D57AD13E21.exe - 0219dabc323e5b7a8a2c36a47376112a3a32971d0b08b8b376e7c7a2f957dc54
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://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

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

Embedded IP addresses

40.74.98.197
52.253.84.76
4.230.171.124
135.233.45.222
20.42.179.204
20.42.65.85
20.42.65.89
52.110.12.54
52.148.114.188
52.110.12.3
72.154.7.100

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