Resubmissions
19-01-2022 09:52
220119-lv9resghbm 1018-01-2022 12:03
220118-n8f3dabad3 1018-01-2022 11:55
220118-n3rxpabab6 10Analysis
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max time kernel
140s -
max time network
123s -
platform
windows7_x64 -
resource
win7-en-20211208 -
submitted
18-01-2022 11:55
Static task
static1
Behavioral task
behavioral1
Sample
dexc.ocx.dll
Resource
win7-en-20211208
General
-
Target
dexc.ocx.dll
-
Size
647KB
-
MD5
74335b83254eeff621dd7bea844eb859
-
SHA1
b004da994afd349eec84ef0a579ca9785f6f496d
-
SHA256
5f04c44de516e644115ad8094afbdab4b52ce6e46a848aeb7cf634ad471e4ac0
-
SHA512
edece82d4cb1a8c8d7f5d43ffa7920ff0cb8c61154c5b06d9b3d48a52b0a08a4ce0c0610957d1ca4d5ae6d99e4a4f441da3a2a56eec3e123666742c59905c44e
Malware Config
Extracted
qakbot
403.10
cullinan
1640168876
93.48.80.198:995
140.82.49.12:443
32.221.229.7:443
24.152.219.253:995
31.35.28.29:443
96.37.113.36:993
190.39.205.165:443
79.173.195.234:443
39.49.66.100:995
103.139.242.30:22
79.167.192.206:995
45.9.20.200:2211
24.95.61.62:443
37.210.226.125:61202
103.139.242.30:995
70.163.1.219:443
103.143.8.71:6881
76.169.147.192:32103
136.143.11.232:443
63.153.187.104:443
24.53.49.240:443
94.200.181.154:995
149.135.101.20:443
67.209.195.198:443
209.210.95.228:32100
96.80.109.57:995
80.14.196.176:2222
38.70.253.226:2222
24.222.20.254:443
102.65.38.67:443
217.128.93.27:2222
106.51.48.170:50001
218.101.110.3:995
82.152.39.39:443
24.178.196.158:2222
74.15.2.252:2222
103.142.10.177:443
217.165.123.47:61200
89.101.97.139:443
120.150.218.241:995
117.248.109.38:21
190.73.3.148:2222
105.106.30.144:443
186.64.87.213:443
96.21.251.127:2222
111.125.245.116:995
182.176.180.73:443
188.159.111.126:443
178.153.86.181:443
31.215.70.105:443
73.151.236.31:443
121.175.104.13:32100
182.56.80.29:443
41.228.22.180:443
217.164.247.241:2222
14.96.108.245:61202
182.191.92.203:995
136.232.34.70:443
103.139.242.30:990
173.21.10.71:2222
59.6.7.83:61200
121.175.104.13:443
76.25.142.196:443
71.74.12.34:443
94.60.254.81:443
201.172.31.95:80
187.162.59.232:995
65.100.174.110:8443
100.1.119.41:443
70.51.134.181:2222
79.160.207.214:443
40.134.247.125:995
70.224.68.92:443
105.198.236.99:995
173.25.166.81:443
176.205.152.44:443
108.4.67.252:443
109.12.111.14:443
24.55.112.61:443
50.237.134.22:995
189.174.46.65:995
75.188.35.168:443
187.189.86.168:443
114.79.148.170:443
176.24.150.197:443
95.5.133.68:995
86.98.52.117:443
200.54.14.34:80
72.252.201.34:995
103.139.242.30:443
103.139.242.30:465
103.139.242.30:993
78.101.89.174:2222
78.101.89.174:443
73.5.119.219:443
23.233.146.92:443
89.137.52.44:443
74.5.148.57:443
68.186.192.69:443
50.33.112.74:995
70.93.80.154:995
75.169.58.229:32100
63.143.92.99:995
217.39.100.89:443
46.9.77.245:995
173.71.147.134:995
75.110.250.187:443
185.249.85.205:443
65.100.174.110:443
82.78.212.133:443
83.110.107.123:443
59.88.168.108:443
65.128.74.102:443
67.165.206.193:993
68.204.7.158:443
78.101.82.198:995
80.6.192.58:443
41.97.234.150:995
114.79.145.28:443
188.54.96.91:443
50.238.6.36:443
217.165.11.65:61200
103.143.8.71:995
2.178.67.97:61202
86.198.237.51:2222
88.253.171.236:995
187.172.146.123:443
92.167.4.71:2222
189.30.244.252:995
194.36.28.26:443
84.199.230.66:443
14.96.67.177:443
182.56.57.23:995
87.70.118.51:443
93.48.58.123:2222
69.46.15.180:443
23.82.128.108:443
5.36.7.212:443
200.75.131.234:443
82.77.137.101:995
187.201.90.81:443
201.172.31.95:443
216.238.72.121:443
216.238.71.31:995
-
salt
jHxastDcds)oMc=jvh7wdUhxcsdt2
Signatures
-
Loads dropped DLL 1 IoCs
Processes:
regsvr32.exepid process 1548 regsvr32.exe -
Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
-
Modifies data under HKEY_USERS 10 IoCs
Processes:
explorer.exedescription ioc process Set value (data) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Gvkbvljsm\58146b2 = ce51614b7e50c361f5e9e41abeadbfa50845519cad74da82d7f5c0c9e292394843475697351621283cb679e347e689f72f06cb3924869c5d9fc89a49b11c6ccac20ded21de2867c55a914d0d6765d9cb3956958f83179995de8daa766343ae45 explorer.exe Set value (data) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Gvkbvljsm\7ac82944 = 660f6b3ce3513e9f527037cb5f6a20d2f799b8687db06fe0d9cb6712dd0caeb66c8e06bec5b8db559851bb3ced6872076c472484 explorer.exe Set value (data) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Gvkbvljsm\7ac82944 = 660f7c3ce3510b7e958483e6ab15d9f5c0227a23ab9cf3388f457a61ca23dd explorer.exe Set value (data) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Gvkbvljsm\88a2f199 = 7da88182e3bdaa05c3cbeab55c7c9c7a8d4fa94eff18434a20cb441f00ce4ff579393a90a2b4ba6be6f6b6b8beaa0089abd9baf02ea105761ea88385a0766ee7a7c9ce46fba94c80238565cc explorer.exe Set value (data) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Gvkbvljsm\301e96fc = c0a768da36e385f62322ccca921aa9ded2042291aac58b6b85c97f9de430ef61e2ee787ce0eb5130 explorer.exe Set value (data) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Gvkbvljsm\f7eb9e6f = 801c3b38084d0128362cbd8f2a895c546601ee94ce657eb429a757a9b5a70d9328e2efb290d0903e26a0138e927b7fb7ac0e378fe5fe83e5f0943678169b3f1ccb667a4fe18ab128ac40035034d2fd99e506e02913 explorer.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Gvkbvljsm explorer.exe Set value (data) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Gvkbvljsm\4f57f90a = ad08600838afb3c4c697ea2165b3f2b40e9da66cfa263180bd4897931c878b2dc0fcf9a3244f8b1bf6663a70c2c18908d89891d58fe52be5296e043c8526551726f6d07ebb28a6b61d81275439c7d143e9533c612c1cf8533f873ac85d1a4cff792556ccd41b0e382cee2261de786fc372910d6cb0f51610b8600fe627931a81f422ce603b48e38f110c9db6b74693912724ce259fdf0736fba8aaa7d36e5ecae8f1bff500771f7903 explorer.exe Set value (data) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Gvkbvljsm\4d16d976 = 6e8b2943f60857161168a5e1a294062d6d24cbfa7b6de819c9c0a8266cf39f06f241d05b77c9770b9ce2ba30ecd7ec12c636df6738ab2870a9c6d42d980e0187b12275d504f42da261bd82b1fb74a1bc40e36af04ddcf9afe27e6ffcb56a40ec143f838c5d6150c561 explorer.exe Set value (data) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Gvkbvljsm\f5aabe13 = b123456af024472f413c167056ae59fca0d28d65a1713b45881440cb274a8c7a802bcdeaf6e3e4db501b62605c11d5ebbeddd519216e72 explorer.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
rundll32.exeregsvr32.exepid process 1252 rundll32.exe 1548 regsvr32.exe -
Suspicious behavior: MapViewOfSection 2 IoCs
Processes:
rundll32.exeregsvr32.exepid process 1252 rundll32.exe 1548 regsvr32.exe -
Suspicious use of WriteProcessMemory 43 IoCs
Processes:
rundll32.exerundll32.exeexplorer.exetaskeng.exeregsvr32.exeregsvr32.exeexplorer.exedescription pid process target process PID 1304 wrote to memory of 1252 1304 rundll32.exe rundll32.exe PID 1304 wrote to memory of 1252 1304 rundll32.exe rundll32.exe PID 1304 wrote to memory of 1252 1304 rundll32.exe rundll32.exe PID 1304 wrote to memory of 1252 1304 rundll32.exe rundll32.exe PID 1304 wrote to memory of 1252 1304 rundll32.exe rundll32.exe PID 1304 wrote to memory of 1252 1304 rundll32.exe rundll32.exe PID 1304 wrote to memory of 1252 1304 rundll32.exe rundll32.exe PID 1252 wrote to memory of 268 1252 rundll32.exe explorer.exe PID 1252 wrote to memory of 268 1252 rundll32.exe explorer.exe PID 1252 wrote to memory of 268 1252 rundll32.exe explorer.exe PID 1252 wrote to memory of 268 1252 rundll32.exe explorer.exe PID 1252 wrote to memory of 268 1252 rundll32.exe explorer.exe PID 1252 wrote to memory of 268 1252 rundll32.exe explorer.exe PID 268 wrote to memory of 1488 268 explorer.exe schtasks.exe PID 268 wrote to memory of 1488 268 explorer.exe schtasks.exe PID 268 wrote to memory of 1488 268 explorer.exe schtasks.exe PID 268 wrote to memory of 1488 268 explorer.exe schtasks.exe PID 1648 wrote to memory of 1680 1648 taskeng.exe regsvr32.exe PID 1648 wrote to memory of 1680 1648 taskeng.exe regsvr32.exe PID 1648 wrote to memory of 1680 1648 taskeng.exe regsvr32.exe PID 1648 wrote to memory of 1680 1648 taskeng.exe regsvr32.exe PID 1648 wrote to memory of 1680 1648 taskeng.exe regsvr32.exe PID 1680 wrote to memory of 1548 1680 regsvr32.exe regsvr32.exe PID 1680 wrote to memory of 1548 1680 regsvr32.exe regsvr32.exe PID 1680 wrote to memory of 1548 1680 regsvr32.exe regsvr32.exe PID 1680 wrote to memory of 1548 1680 regsvr32.exe regsvr32.exe PID 1680 wrote to memory of 1548 1680 regsvr32.exe regsvr32.exe PID 1680 wrote to memory of 1548 1680 regsvr32.exe regsvr32.exe PID 1680 wrote to memory of 1548 1680 regsvr32.exe regsvr32.exe PID 1548 wrote to memory of 1544 1548 regsvr32.exe explorer.exe PID 1548 wrote to memory of 1544 1548 regsvr32.exe explorer.exe PID 1548 wrote to memory of 1544 1548 regsvr32.exe explorer.exe PID 1548 wrote to memory of 1544 1548 regsvr32.exe explorer.exe PID 1548 wrote to memory of 1544 1548 regsvr32.exe explorer.exe PID 1548 wrote to memory of 1544 1548 regsvr32.exe explorer.exe PID 1544 wrote to memory of 1736 1544 explorer.exe reg.exe PID 1544 wrote to memory of 1736 1544 explorer.exe reg.exe PID 1544 wrote to memory of 1736 1544 explorer.exe reg.exe PID 1544 wrote to memory of 1736 1544 explorer.exe reg.exe PID 1544 wrote to memory of 1388 1544 explorer.exe reg.exe PID 1544 wrote to memory of 1388 1544 explorer.exe reg.exe PID 1544 wrote to memory of 1388 1544 explorer.exe reg.exe PID 1544 wrote to memory of 1388 1544 explorer.exe reg.exe
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\dexc.ocx.dll,#11⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\dexc.ocx.dll,#12⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\explorer.exeC:\Windows\SysWOW64\explorer.exe3⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\system32\schtasks.exe" /Create /RU "NT AUTHORITY\SYSTEM" /tn lnydjxmo /tr "regsvr32.exe -s \"C:\Users\Admin\AppData\Local\Temp\dexc.ocx.dll\"" /SC ONCE /Z /ST 12:57 /ET 13:094⤵
- Creates scheduled task(s)
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C:\Windows\system32\taskeng.exetaskeng.exe {CCB268A1-D7A3-46CB-AFE2-5B1DF52AFCFF} S-1-5-18:NT AUTHORITY\System:Service:1⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\regsvr32.exeregsvr32.exe -s "C:\Users\Admin\AppData\Local\Temp\dexc.ocx.dll"2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\regsvr32.exe-s "C:\Users\Admin\AppData\Local\Temp\dexc.ocx.dll"3⤵
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\explorer.exeC:\Windows\SysWOW64\explorer.exe4⤵
- Modifies data under HKEY_USERS
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\reg.exeC:\Windows\system32\reg.exe ADD "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths" /f /t REG_DWORD /v "C:\ProgramData\Microsoft\Fzdxohexu" /d "0"5⤵
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C:\Windows\system32\reg.exeC:\Windows\system32\reg.exe ADD "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths" /f /t REG_DWORD /v "C:\Users\Admin\AppData\Roaming\Microsoft\Mqfygk" /d "0"5⤵
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\dexc.ocx.dllMD5
74335b83254eeff621dd7bea844eb859
SHA1b004da994afd349eec84ef0a579ca9785f6f496d
SHA2565f04c44de516e644115ad8094afbdab4b52ce6e46a848aeb7cf634ad471e4ac0
SHA512edece82d4cb1a8c8d7f5d43ffa7920ff0cb8c61154c5b06d9b3d48a52b0a08a4ce0c0610957d1ca4d5ae6d99e4a4f441da3a2a56eec3e123666742c59905c44e
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\Users\Admin\AppData\Local\Temp\dexc.ocx.dllMD5
74335b83254eeff621dd7bea844eb859
SHA1b004da994afd349eec84ef0a579ca9785f6f496d
SHA2565f04c44de516e644115ad8094afbdab4b52ce6e46a848aeb7cf634ad471e4ac0
SHA512edece82d4cb1a8c8d7f5d43ffa7920ff0cb8c61154c5b06d9b3d48a52b0a08a4ce0c0610957d1ca4d5ae6d99e4a4f441da3a2a56eec3e123666742c59905c44e
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memory/268-63-0x00000000000B0000-0x00000000000B2000-memory.dmpFilesize
8KB
-
memory/268-66-0x0000000000080000-0x00000000000A1000-memory.dmpFilesize
132KB
-
memory/268-65-0x00000000749F1000-0x00000000749F3000-memory.dmpFilesize
8KB
-
memory/1252-59-0x0000000000240000-0x0000000000261000-memory.dmpFilesize
132KB
-
memory/1252-61-0x0000000000380000-0x00000000003C3000-memory.dmpFilesize
268KB
-
memory/1252-62-0x0000000000240000-0x0000000000261000-memory.dmpFilesize
132KB
-
memory/1252-55-0x0000000075F91000-0x0000000075F93000-memory.dmpFilesize
8KB
-
memory/1252-60-0x0000000000240000-0x0000000000261000-memory.dmpFilesize
132KB
-
memory/1252-58-0x0000000000240000-0x0000000000261000-memory.dmpFilesize
132KB
-
memory/1252-57-0x0000000000240000-0x0000000000261000-memory.dmpFilesize
132KB
-
memory/1252-56-0x00000000002C0000-0x0000000000360000-memory.dmpFilesize
640KB
-
memory/1544-81-0x0000000000080000-0x00000000000A1000-memory.dmpFilesize
132KB
-
memory/1548-71-0x0000000000850000-0x00000000008F0000-memory.dmpFilesize
640KB
-
memory/1548-73-0x0000000000340000-0x0000000000361000-memory.dmpFilesize
132KB
-
memory/1548-72-0x0000000000340000-0x0000000000361000-memory.dmpFilesize
132KB
-
memory/1548-75-0x0000000000340000-0x0000000000361000-memory.dmpFilesize
132KB
-
memory/1548-74-0x0000000000340000-0x0000000000361000-memory.dmpFilesize
132KB
-
memory/1548-80-0x0000000000340000-0x0000000000361000-memory.dmpFilesize
132KB
-
memory/1548-79-0x00000000002F0000-0x0000000000333000-memory.dmpFilesize
268KB
-
memory/1680-67-0x000007FEFBD21000-0x000007FEFBD23000-memory.dmpFilesize
8KB