Analysis
-
max time kernel
138s -
max time network
125s -
platform
windows10_x64 -
resource
win10-en-20211208 -
submitted
21-12-2021 14:25
Static task
static1
Behavioral task
behavioral1
Sample
den3.ocx.dll
Resource
win7-en-20211208
General
-
Target
den3.ocx.dll
-
Size
663KB
-
MD5
99aa1e932bf990e15037f77d1e654df9
-
SHA1
d90406308876140075149c4ef1ae8f0367bd0f49
-
SHA256
b91f8a0950eddbea50b6dd2f508ee70e978f8086fb0460f20939edf2e32263ed
-
SHA512
63af09d8df7f291f9b565c011ab70ecf02e3ecd003f701715b2d4bc7fc6dae8009cf54b8b230b4be1f72483f450087d35345d6451ad472a199ee6c045c709edd
Malware Config
Extracted
qakbot
403.10
cullinan
1640084934
95.5.133.68:995
188.159.122.122:443
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
109.12.111.14:443
14.96.72.249:61202
93.48.80.198:995
45.9.20.200:2211
24.95.61.62:443
79.167.192.206:995
37.210.226.125:61202
103.139.242.30:995
70.163.1.219:443
114.79.148.170:443
63.153.187.104:443
103.143.8.71:6881
24.53.49.240:443
94.200.181.154:995
149.135.101.20:443
209.210.95.228:32100
67.209.195.198:443
96.80.109.57:995
80.14.196.176:2222
38.70.253.226:2222
24.222.20.254:443
217.165.123.47:61200
136.232.34.70:443
24.178.196.158:2222
74.15.2.252:2222
217.128.93.27:2222
218.101.110.3:995
111.125.245.116:995
102.65.38.67:443
103.139.242.30:443
117.248.109.38:21
190.73.3.148:2222
136.143.11.232:443
120.150.218.241:995
96.21.251.127:2222
106.51.48.170:50001
89.101.97.139:443
103.139.242.30:465
103.139.242.30:990
105.198.236.99:995
186.64.87.213:443
176.24.150.197:443
103.139.242.30:993
41.228.22.180:443
189.174.46.65:995
82.152.39.39:443
182.191.92.203:995
103.142.10.177:443
217.164.247.241:2222
31.215.99.73:443
75.188.35.168:443
79.173.195.234:443
76.25.142.196:443
78.101.89.174:2222
59.6.7.83:61200
78.101.89.174:443
86.98.52.117:443
76.169.147.192:32103
173.21.10.71:2222
73.151.236.31:443
71.74.12.34:443
94.60.254.81:443
73.5.119.219:443
187.162.59.232:995
23.233.146.92:443
89.137.52.44:443
201.172.31.95:80
74.5.148.57:443
70.51.134.181:2222
50.237.134.22:995
40.134.247.125:995
187.189.86.168:443
72.252.201.34:995
108.4.67.252:443
190.39.205.165:443
24.55.112.61:443
100.1.119.41:443
200.54.14.34:80
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
213.120.26.24:443
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
39.49.27.10:995
82.78.212.133:443
83.110.107.123:443
182.56.99.126:443
59.88.168.108:443
65.128.74.102:443
67.165.206.193:993
79.160.207.214:443
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
65.100.174.110:8443
182.176.180.73:443
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
105.111.124.76:443
84.199.230.66:443
14.96.67.177:443
182.56.57.23:995
87.70.93.215:443
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
207.246.112.221:443
207.246.112.221:995
216.238.72.121:995
216.238.71.31:443
27.223.92.142:995
-
salt
jHxastDcds)oMc=jvh7wdUhxcsdt2
Signatures
-
Loads dropped DLL 1 IoCs
Processes:
regsvr32.exepid process 1892 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 Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Yyeeueeiojptu explorer.exe Set value (data) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Yyeeueeiojptu\86415af3 = 15cf3e675acab489b512a0627b87210a123c6479c0bb72c060f79c716c6b1cbe2b8194e2b59d8188489b2b2c3be88a5eee58a92d30014a7bea0adda618cc7adfe981952b4a1bfc8a6d5e3893 explorer.exe Set value (data) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Yyeeueeiojptu\b62edd8 = cc49348e025b4667f61a6867797b1760d8c73d27594112248ce535e77d769426ea51954444d2 explorer.exe Set value (data) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Yyeeueeiojptu\86415af3 = 15cf29675aca8139bdacc83cfee0704657ea4266962932f6bb250e586362d3561f70c37eeae903c6728ac400d63c8f8ff13042c19b39632cd019c39f1b9878cf1a4eb4bee596c1c41f6dd75e468a63a92f137c67d0f283ce1a0a9ecc8d89fe4a61 explorer.exe Set value (data) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Yyeeueeiojptu\b3de8abd = 426db6082a9f8d08257044cef0e06e32bd886a81ab388dea7e0a57caac45e48f581c38506da87f9bfe53e91f853f5f293cafc620094db79aff3a854d8104fab3f3dd743bdc5aac11949dde4b0c943cabe39bdd6ac358b11a64082433da7854a9f5f28dcca1993371eeb5a9db0c148b1a0c7b96289d31c33d19cf9137e81e0a307145fbdd644271a225f904cf8367b9fe7e52c37cb236857459 explorer.exe Set value (data) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Yyeeueeiojptu\b19faac1 = cd7f140b5b2e1b404d861f4f6310a9d3a8df78c195cacc0a8ddc2ebc0bb35dcd26c819cec3a30a5e4bca7c24c4de3e818e6f91b5a6c5627c3e02d274738b8671d1b91593097d explorer.exe Set value (data) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Yyeeueeiojptu\923cda4 = 67a81897479845ecb6e00c7efa1f6c67cdc4cf489ace0dab5a630a4ef000f53f4e2ab997faed62eb explorer.exe Set value (data) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Yyeeueeiojptu\742b822e = bde527cebe2ea74d500e71522e558c6432820329909a13f15b385b81e041e122d1c9a227897b850ae94a21f5757c676a explorer.exe Set value (data) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Yyeeueeiojptu\cc97e54b = 8a84f01270cc4917b660d0d6fa9c67dcb191dbea28 explorer.exe Set value (data) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Yyeeueeiojptu\f9083505 = 035286dbab6491e6cce93f46e5080f640de5e5161aeb1bc77e4a1f59245b1ae176e75946eb7603f6da11ab6354ad9a16725bdbc66b explorer.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
Processes:
regsvr32.exeregsvr32.exepid process 3144 regsvr32.exe 3144 regsvr32.exe 3144 regsvr32.exe 3144 regsvr32.exe 3144 regsvr32.exe 3144 regsvr32.exe 3144 regsvr32.exe 3144 regsvr32.exe 3144 regsvr32.exe 3144 regsvr32.exe 3144 regsvr32.exe 3144 regsvr32.exe 3144 regsvr32.exe 3144 regsvr32.exe 3144 regsvr32.exe 3144 regsvr32.exe 3144 regsvr32.exe 3144 regsvr32.exe 3144 regsvr32.exe 3144 regsvr32.exe 3144 regsvr32.exe 3144 regsvr32.exe 3144 regsvr32.exe 3144 regsvr32.exe 3144 regsvr32.exe 3144 regsvr32.exe 3144 regsvr32.exe 3144 regsvr32.exe 3144 regsvr32.exe 3144 regsvr32.exe 3144 regsvr32.exe 3144 regsvr32.exe 3144 regsvr32.exe 3144 regsvr32.exe 3144 regsvr32.exe 3144 regsvr32.exe 3144 regsvr32.exe 3144 regsvr32.exe 3144 regsvr32.exe 3144 regsvr32.exe 3144 regsvr32.exe 3144 regsvr32.exe 1892 regsvr32.exe 1892 regsvr32.exe 1892 regsvr32.exe 1892 regsvr32.exe 1892 regsvr32.exe 1892 regsvr32.exe 1892 regsvr32.exe 1892 regsvr32.exe 1892 regsvr32.exe 1892 regsvr32.exe 1892 regsvr32.exe 1892 regsvr32.exe 1892 regsvr32.exe 1892 regsvr32.exe 1892 regsvr32.exe 1892 regsvr32.exe 1892 regsvr32.exe 1892 regsvr32.exe 1892 regsvr32.exe 1892 regsvr32.exe 1892 regsvr32.exe 1892 regsvr32.exe -
Suspicious behavior: MapViewOfSection 2 IoCs
Processes:
regsvr32.exeregsvr32.exepid process 3144 regsvr32.exe 1892 regsvr32.exe -
Suspicious use of WriteProcessMemory 23 IoCs
Processes:
regsvr32.exeregsvr32.exeexplorer.exeregsvr32.exeregsvr32.exeexplorer.exedescription pid process target process PID 3160 wrote to memory of 3144 3160 regsvr32.exe regsvr32.exe PID 3160 wrote to memory of 3144 3160 regsvr32.exe regsvr32.exe PID 3160 wrote to memory of 3144 3160 regsvr32.exe regsvr32.exe PID 3144 wrote to memory of 1200 3144 regsvr32.exe explorer.exe PID 3144 wrote to memory of 1200 3144 regsvr32.exe explorer.exe PID 3144 wrote to memory of 1200 3144 regsvr32.exe explorer.exe PID 3144 wrote to memory of 1200 3144 regsvr32.exe explorer.exe PID 3144 wrote to memory of 1200 3144 regsvr32.exe explorer.exe PID 1200 wrote to memory of 3268 1200 explorer.exe schtasks.exe PID 1200 wrote to memory of 3268 1200 explorer.exe schtasks.exe PID 1200 wrote to memory of 3268 1200 explorer.exe schtasks.exe PID 2620 wrote to memory of 1892 2620 regsvr32.exe regsvr32.exe PID 2620 wrote to memory of 1892 2620 regsvr32.exe regsvr32.exe PID 2620 wrote to memory of 1892 2620 regsvr32.exe regsvr32.exe PID 1892 wrote to memory of 1432 1892 regsvr32.exe explorer.exe PID 1892 wrote to memory of 1432 1892 regsvr32.exe explorer.exe PID 1892 wrote to memory of 1432 1892 regsvr32.exe explorer.exe PID 1892 wrote to memory of 1432 1892 regsvr32.exe explorer.exe PID 1892 wrote to memory of 1432 1892 regsvr32.exe explorer.exe PID 1432 wrote to memory of 884 1432 explorer.exe reg.exe PID 1432 wrote to memory of 884 1432 explorer.exe reg.exe PID 1432 wrote to memory of 1268 1432 explorer.exe reg.exe PID 1432 wrote to memory of 1268 1432 explorer.exe reg.exe
Processes
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C:\Windows\system32\regsvr32.exeregsvr32 /s C:\Users\Admin\AppData\Local\Temp\den3.ocx.dll1⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\regsvr32.exe/s C:\Users\Admin\AppData\Local\Temp\den3.ocx.dll2⤵
- 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 yemirnyfyo /tr "regsvr32.exe -s \"C:\Users\Admin\AppData\Local\Temp\den3.ocx.dll\"" /SC ONCE /Z /ST 12:04 /ET 12:164⤵
- Creates scheduled task(s)
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\??\c:\windows\system32\regsvr32.exeregsvr32.exe -s "C:\Users\Admin\AppData\Local\Temp\den3.ocx.dll"1⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\regsvr32.exe-s "C:\Users\Admin\AppData\Local\Temp\den3.ocx.dll"2⤵
- 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.exe3⤵
- 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\Nblkduiusyha" /d "0"4⤵
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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\Iyswlpjf" /d "0"4⤵
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\den3.ocx.dllMD5
99aa1e932bf990e15037f77d1e654df9
SHA1d90406308876140075149c4ef1ae8f0367bd0f49
SHA256b91f8a0950eddbea50b6dd2f508ee70e978f8086fb0460f20939edf2e32263ed
SHA51263af09d8df7f291f9b565c011ab70ecf02e3ecd003f701715b2d4bc7fc6dae8009cf54b8b230b4be1f72483f450087d35345d6451ad472a199ee6c045c709edd
-
\Users\Admin\AppData\Local\Temp\den3.ocx.dllMD5
99aa1e932bf990e15037f77d1e654df9
SHA1d90406308876140075149c4ef1ae8f0367bd0f49
SHA256b91f8a0950eddbea50b6dd2f508ee70e978f8086fb0460f20939edf2e32263ed
SHA51263af09d8df7f291f9b565c011ab70ecf02e3ecd003f701715b2d4bc7fc6dae8009cf54b8b230b4be1f72483f450087d35345d6451ad472a199ee6c045c709edd
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memory/884-130-0x0000000000000000-mapping.dmp
-
memory/1200-119-0x0000000000000000-mapping.dmp
-
memory/1200-121-0x00000000035B0000-0x00000000035B1000-memory.dmpFilesize
4KB
-
memory/1200-122-0x00000000035B0000-0x00000000035B1000-memory.dmpFilesize
4KB
-
memory/1200-123-0x0000000000CD0000-0x0000000000CF1000-memory.dmpFilesize
132KB
-
memory/1268-131-0x0000000000000000-mapping.dmp
-
memory/1432-129-0x0000000000000000-mapping.dmp
-
memory/1432-134-0x0000000000B80000-0x0000000000BA1000-memory.dmpFilesize
132KB
-
memory/1432-132-0x00000000031F0000-0x00000000031F1000-memory.dmpFilesize
4KB
-
memory/1432-133-0x00000000031F0000-0x00000000031F1000-memory.dmpFilesize
4KB
-
memory/1892-125-0x0000000000000000-mapping.dmp
-
memory/1892-128-0x0000000003AB0000-0x0000000003C3E000-memory.dmpFilesize
1.6MB
-
memory/1892-127-0x0000000003A30000-0x0000000003AAB000-memory.dmpFilesize
492KB
-
memory/3144-115-0x0000000000000000-mapping.dmp
-
memory/3144-118-0x0000000000400000-0x00000000004A2000-memory.dmpFilesize
648KB
-
memory/3144-117-0x0000000004B00000-0x0000000004C8E000-memory.dmpFilesize
1.6MB
-
memory/3144-116-0x0000000004A40000-0x0000000004ABB000-memory.dmpFilesize
492KB
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memory/3268-120-0x0000000000000000-mapping.dmp