qakbot | b91f8a0950eddbea50b6dd2f508ee70e978f8086fb0460f20939edf2e32263ed

General

Target

den3.ocx.dll
Size

663KB
MD5

99aa1e932bf990e15037f77d1e654df9
SHA1

d90406308876140075149c4ef1ae8f0367bd0f49
SHA256

b91f8a0950eddbea50b6dd2f508ee70e978f8086fb0460f20939edf2e32263ed
SHA512

63af09d8df7f291f9b565c011ab70ecf02e3ecd003f701715b2d4bc7fc6dae8009cf54b8b230b4be1f72483f450087d35345d6451ad472a199ee6c045c709edd

Score

10^/10

qakbot cullinan 1640084934 banker evasion stealer trojan

Malware Config

Extracted

Family

qakbot

Version

403.10

Botnet

cullinan

Campaign

1640084934

C2

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

Attributes

salt
jHxastDcds)oMc=jvh7wdUhxcsdt2

Signatures

Qakbot/Qbot
Qbot or Qakbot is a sophisticated worm with banking capabilities.
trojan banker stealer qakbot
Windows security bypass 2 TTPs
evasion trojan

Disabling Security Tools
T1089

Modify Registry
T1112
Loads dropped DLL 1 IoCs

Processes:

regsvr32.exe

pid process

112 regsvr32.exe
Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exe

pid process

1552 schtasks.exe

pid	process
112	regsvr32.exe

pid	process
1552	schtasks.exe

Modifies data under HKEY_USERS 10 IoCs

Processes:

explorer.exe

description	ioc	process
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Maynjvwouaer\b91a4528 = 17121aa1a888ef6a646032c24b45f7bc577d0a50be3a7510647101bee1591a23ec23ed7e2f25f0	explorer.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Maynjvwouaer\7eef4dbb = 4bb369fadb190325db2e9f6f64b921ac42920238013b54db464172b5078da7c440a01c539c2b3bdcbbecc3cfc3ca9c021ac483edc571d98ec01e6854ef527449d55a85735aa57fd4f8a979c0d9fb56322a	explorer.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Maynjvwouaer\8c859566 = c018d953fd4cae60724a2d0efdf20391ade09630b2f1c38dfe730746fce41628bcefa517e7678f8a1e802a6044b9589cfa331d90876ebdbcaaf754a5df28f517e7ec1193141ec6ff0ba18126df3701c75efdf2cde62894bb43f4	explorer.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Maynjvwouaer\c4120aa2 = da811c28161e016b189749c15996982b38f3f8c0fec4da3dc3fb0a12f3ab9f64bfb6b02ba184606ce5c7c7df1c0be6c5f62858be01de48bbfde2ad309c92998aede5e7159c6b36f6e832fc6bb87d57b0afdf6fb6	explorer.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Maynjvwouaer\7cae6dc7 = 44b4c480e272d5cb764a76a6865601d7e0586a07b9ab1589d7a5bd6cc809ee5f8fce834ff3ba880d052c471dbfa2acf51602b388d392d3	explorer.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Maynjvwouaer\1a6224d = 6b4b8d1499c11258f2bfe2b8437ed6a2d0c424146bf0f3a6459be80a22be6f2a787f9ea1a74d6b344b55afcc634c2b034422a0b6e61b87d9a24d731d3128867500c949	explorer.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Maynjvwouaer\f3ccfa90 = 0ec1351d5456e4cfb8a41ab601fbd4a54617138aad13d2f73810aeb454bb77c1cf857b793e9a6099462e75ec5d1fb7879eb768fce82f7244850daa60ad568033f2adaa4ff691051a2650a2569c768a8974378daa244b69321371ee036964fa06e270d05cd996a59192734bf3ba6f43c5d0ad7507a73dd3	explorer.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Maynjvwouaer	explorer.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Maynjvwouaer\f3ccfa90 = 0ec1221d5456d14e4abd1b0fba25263f5a6bda8507eb32334a95e691827b056ea3a2a48bfcd9ec2b5128dd660f508243403b7f7854b325ac49c03690a6fcdb5cf5747fbbd002f7ab3f7d717db552d74b4c003939ed2b05f0bd35bd6d83642d2b2633	explorer.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Maynjvwouaer\c6532ade = ae5a5dce4db848034852913338e04da7d1ea2a8e066f248577f7d78cc3a0b03353193b8f6ecef60814f56006f2583ab219f7dc8b29cf993e1cf7ecbde7dffeb6e752c94e548976e3d96da05be1b860eb39e4de9cb429ce04bafc441ce8fd1c5b41acc3792697f92d29a9dadde1dfa3c0c9a0fe4a2c954c84ce90d96c539e8e7f1e12fb318d277ae4eb0f360dcb6029e9ecdbd68796b8fde4b4564237f7900d5b439db30a49e915a3a0a9c48fb1	explorer.exe

Suspicious behavior: EnumeratesProcesses 42 IoCs

Processes:

regsvr32.exeregsvr32.exe

pid	process
1340	regsvr32.exe
1340	regsvr32.exe
1340	regsvr32.exe
1340	regsvr32.exe
1340	regsvr32.exe
1340	regsvr32.exe
1340	regsvr32.exe
1340	regsvr32.exe
1340	regsvr32.exe
1340	regsvr32.exe
1340	regsvr32.exe
1340	regsvr32.exe
1340	regsvr32.exe
1340	regsvr32.exe
1340	regsvr32.exe
1340	regsvr32.exe
1340	regsvr32.exe
1340	regsvr32.exe
1340	regsvr32.exe
1340	regsvr32.exe
1340	regsvr32.exe
112	regsvr32.exe
112	regsvr32.exe
112	regsvr32.exe
112	regsvr32.exe
112	regsvr32.exe
112	regsvr32.exe
112	regsvr32.exe
112	regsvr32.exe
112	regsvr32.exe
112	regsvr32.exe
112	regsvr32.exe
112	regsvr32.exe
112	regsvr32.exe
112	regsvr32.exe
112	regsvr32.exe
112	regsvr32.exe
112	regsvr32.exe
112	regsvr32.exe
112	regsvr32.exe
112	regsvr32.exe
112	regsvr32.exe

Suspicious behavior: MapViewOfSection 2 IoCs

Processes:

regsvr32.exeregsvr32.exe

pid process

1340 regsvr32.exe
112 regsvr32.exe

Suspicious use of WriteProcessMemory 43 IoCs

Processes:

regsvr32.exeregsvr32.exeexplorer.exetaskeng.exeregsvr32.exeregsvr32.exeexplorer.exe

description	pid	process	target process
PID 1620 wrote to memory of 1340	1620	regsvr32.exe	regsvr32.exe
PID 1620 wrote to memory of 1340	1620	regsvr32.exe	regsvr32.exe
PID 1620 wrote to memory of 1340	1620	regsvr32.exe	regsvr32.exe
PID 1620 wrote to memory of 1340	1620	regsvr32.exe	regsvr32.exe
PID 1620 wrote to memory of 1340	1620	regsvr32.exe	regsvr32.exe
PID 1620 wrote to memory of 1340	1620	regsvr32.exe	regsvr32.exe
PID 1620 wrote to memory of 1340	1620	regsvr32.exe	regsvr32.exe
PID 1340 wrote to memory of 332	1340	regsvr32.exe	explorer.exe
PID 1340 wrote to memory of 332	1340	regsvr32.exe	explorer.exe
PID 1340 wrote to memory of 332	1340	regsvr32.exe	explorer.exe
PID 1340 wrote to memory of 332	1340	regsvr32.exe	explorer.exe
PID 1340 wrote to memory of 332	1340	regsvr32.exe	explorer.exe
PID 1340 wrote to memory of 332	1340	regsvr32.exe	explorer.exe
PID 332 wrote to memory of 1552	332	explorer.exe	schtasks.exe
PID 332 wrote to memory of 1552	332	explorer.exe	schtasks.exe
PID 332 wrote to memory of 1552	332	explorer.exe	schtasks.exe
PID 332 wrote to memory of 1552	332	explorer.exe	schtasks.exe
PID 1108 wrote to memory of 1612	1108	taskeng.exe	regsvr32.exe
PID 1108 wrote to memory of 1612	1108	taskeng.exe	regsvr32.exe
PID 1108 wrote to memory of 1612	1108	taskeng.exe	regsvr32.exe
PID 1108 wrote to memory of 1612	1108	taskeng.exe	regsvr32.exe
PID 1108 wrote to memory of 1612	1108	taskeng.exe	regsvr32.exe
PID 1612 wrote to memory of 112	1612	regsvr32.exe	regsvr32.exe
PID 1612 wrote to memory of 112	1612	regsvr32.exe	regsvr32.exe
PID 1612 wrote to memory of 112	1612	regsvr32.exe	regsvr32.exe
PID 1612 wrote to memory of 112	1612	regsvr32.exe	regsvr32.exe
PID 1612 wrote to memory of 112	1612	regsvr32.exe	regsvr32.exe
PID 1612 wrote to memory of 112	1612	regsvr32.exe	regsvr32.exe
PID 1612 wrote to memory of 112	1612	regsvr32.exe	regsvr32.exe
PID 112 wrote to memory of 288	112	regsvr32.exe	explorer.exe
PID 112 wrote to memory of 288	112	regsvr32.exe	explorer.exe
PID 112 wrote to memory of 288	112	regsvr32.exe	explorer.exe
PID 112 wrote to memory of 288	112	regsvr32.exe	explorer.exe
PID 112 wrote to memory of 288	112	regsvr32.exe	explorer.exe
PID 112 wrote to memory of 288	112	regsvr32.exe	explorer.exe
PID 288 wrote to memory of 1964	288	explorer.exe	reg.exe
PID 288 wrote to memory of 1964	288	explorer.exe	reg.exe
PID 288 wrote to memory of 1964	288	explorer.exe	reg.exe
PID 288 wrote to memory of 1964	288	explorer.exe	reg.exe
PID 288 wrote to memory of 1716	288	explorer.exe	reg.exe
PID 288 wrote to memory of 1716	288	explorer.exe	reg.exe
PID 288 wrote to memory of 1716	288	explorer.exe	reg.exe
PID 288 wrote to memory of 1716	288	explorer.exe	reg.exe

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\den3.ocx.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:1620

C:\Windows\SysWOW64\regsvr32.exe
/s C:\Users\Admin\AppData\Local\Temp\den3.ocx.dll
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:1340

C:\Windows\SysWOW64\explorer.exe
C:\Windows\SysWOW64\explorer.exe
3⤵
- Suspicious use of WriteProcessMemory
PID:332

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\system32\schtasks.exe" /Create /RU "NT AUTHORITY\SYSTEM" /tn uxjvgbhmdq /tr "regsvr32.exe -s \"C:\Users\Admin\AppData\Local\Temp\den3.ocx.dll\"" /SC ONCE /Z /ST 14:27 /ET 14:39
4⤵
- Creates scheduled task(s)
PID:1552

C:\Windows\system32\taskeng.exe
taskeng.exe {64F5FD3B-9514-4554-A040-E12A66CD744F} S-1-5-18:NT AUTHORITY\System:Service:
1⤵
- Suspicious use of WriteProcessMemory
PID:1108

C:\Windows\system32\regsvr32.exe
regsvr32.exe -s "C:\Users\Admin\AppData\Local\Temp\den3.ocx.dll"
2⤵
- Suspicious use of WriteProcessMemory
PID:1612

C:\Windows\SysWOW64\regsvr32.exe
-s "C:\Users\Admin\AppData\Local\Temp\den3.ocx.dll"
3⤵
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:112

C:\Windows\SysWOW64\explorer.exe
C:\Windows\SysWOW64\explorer.exe
4⤵
- Modifies data under HKEY_USERS
- Suspicious use of WriteProcessMemory
PID:288

C:\Windows\system32\reg.exe
C:\Windows\system32\reg.exe ADD "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths" /f /t REG_DWORD /v "C:\ProgramData\Microsoft\Eoydvegxemli" /d "0"
5⤵
PID:1964

C:\Windows\system32\reg.exe
C:\Windows\system32\reg.exe ADD "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths" /f /t REG_DWORD /v "C:\Users\Admin\AppData\Roaming\Microsoft\Jeurch" /d "0"
5⤵
PID:1716

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Disabling Security Tools

1

T1089

Modify Registry

1

T1112

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\den3.ocx.dll
MD5
99aa1e932bf990e15037f77d1e654df9

SHA1
d90406308876140075149c4ef1ae8f0367bd0f49

SHA256
b91f8a0950eddbea50b6dd2f508ee70e978f8086fb0460f20939edf2e32263ed

SHA512
63af09d8df7f291f9b565c011ab70ecf02e3ecd003f701715b2d4bc7fc6dae8009cf54b8b230b4be1f72483f450087d35345d6451ad472a199ee6c045c709edd

Download Submit
\Users\Admin\AppData\Local\Temp\den3.ocx.dll
MD5
99aa1e932bf990e15037f77d1e654df9

SHA1
d90406308876140075149c4ef1ae8f0367bd0f49

SHA256
b91f8a0950eddbea50b6dd2f508ee70e978f8086fb0460f20939edf2e32263ed

SHA512
63af09d8df7f291f9b565c011ab70ecf02e3ecd003f701715b2d4bc7fc6dae8009cf54b8b230b4be1f72483f450087d35345d6451ad472a199ee6c045c709edd

Download Submit
memory/112-77-0x0000000000350000-0x00000000003F2000-memory.dmp

Filesize
648KB

Download
memory/112-75-0x0000000000C00000-0x0000000000C7B000-memory.dmp

Filesize
492KB

Download
memory/112-76-0x0000000000C90000-0x0000000000E10000-memory.dmp

Filesize
1.5MB

Download
memory/112-73-0x0000000000350000-0x00000000003F2000-memory.dmp

Filesize
648KB

Download
memory/112-70-0x0000000000000000-mapping.dmp

Download
memory/288-84-0x00000000000C0000-0x00000000000E1000-memory.dmp

Filesize
132KB

Download
memory/288-79-0x0000000000000000-mapping.dmp

Download
memory/332-60-0x0000000000000000-mapping.dmp

Download
memory/332-62-0x0000000074611000-0x0000000074613000-memory.dmp

Filesize
8KB

Download
memory/332-66-0x00000000000D0000-0x00000000000F1000-memory.dmp

Filesize
132KB

Download
memory/332-59-0x0000000000080000-0x0000000000082000-memory.dmp

Filesize
8KB

Download
memory/1340-56-0x00000000008C0000-0x0000000000940000-memory.dmp

Filesize
512KB

Download
memory/1340-65-0x00000000008C0000-0x0000000000940000-memory.dmp

Filesize
512KB

Download
memory/1340-58-0x0000000001F60000-0x0000000001FDB000-memory.dmp

Filesize
492KB

Download
memory/1340-64-0x0000000001FE0000-0x0000000002160000-memory.dmp

Filesize
1.5MB

Download
memory/1340-55-0x0000000075AE1000-0x0000000075AE3000-memory.dmp

Filesize
8KB

Download
memory/1340-54-0x0000000000000000-mapping.dmp

Download
memory/1552-63-0x0000000000000000-mapping.dmp

Download
memory/1612-67-0x0000000000000000-mapping.dmp

Download
memory/1620-53-0x000007FEFBC21000-0x000007FEFBC23000-memory.dmp

Filesize
8KB

Download
memory/1716-83-0x0000000000000000-mapping.dmp

Download
memory/1964-82-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads