qakbot | 33af9ecd4f11b66e3a1dc74477dd8614533eaea80d67fdda26cc948f7d693e2f

General

Target

1.dll
Size

645KB
MD5

8d24810baf00c916c460f650b3635908
SHA1

cb437477a87258436dadf1984fdb0569ce5921e5
SHA256

33af9ecd4f11b66e3a1dc74477dd8614533eaea80d67fdda26cc948f7d693e2f
SHA512

2e6520a7eedfc9ae3875bbd7b14e3959afa4e09ad06448a132d2aabcb102ae90aca3d66e7119530d63ba6e97371f67f72b7538f0ec41a50897e7b510f2f2b48b

Score

10^/10

qakbot cullinan 1640168876 banker evasion stealer trojan

Malware Config

Extracted

Family

qakbot

Version

403.10

Botnet

cullinan

Campaign

1640168876

C2

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

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

1176 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

628 schtasks.exe

pid	process
1176	regsvr32.exe

pid	process
628	schtasks.exe

Modifies data under HKEY_USERS 10 IoCs

Processes:

explorer.exe

description	ioc	process
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Rziiaaurjfniiv\db2e291d = 9ba890c7b519cb218ad28d8ff14ecbd74a7abae8dee0f3a8cd9490e31673eac7d554a8caf46419	explorer.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Rziiaaurjfniiv\63924e78 = 382a085bd0ff4b9e10623027ea4b353af56fb87a5cdd0a11c08a25824349cd0bd94af5b570be7583fa7090c4c592fdcab1f30a93bc954860deb0b60efb396b19	explorer.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Rziiaaurjfniiv\61d36e04 = 9a833f435b1a4ca0cf47802df0f9cf7460e39ba038aa0df2e2a0c5427d435990a98373d11aa4d9ca38091910cfa47b858d30ab3f0be78c8d6881d2bad66d391baf87389a5c87ed6daeb81026e9d4e182e1fec80719cb9feecda67b	explorer.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Rziiaaurjfniiv\1e9a01f2 = c92fcea423f6201ab34ca821d677830e1fb6a35906e37a4a408a2ae24ed94326a338927a9155406afdfb9160ed0452ff2f1821f0cee993d6b394b593739996abbdebe064365b14a85d52724b39df46eb9eadef318f3219dfbf3d65b38443bc610813be5cbe5a	explorer.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Rziiaaurjfniiv\a6266697 = cfa9aeb99c2ad8ce0f048b0802944b5c1ebbd8dc8b6c3d5f2c30bf1c4712b1a10a40bb17510ccbf497fb9fcc344fcc32ace443fef55a037a851a436162577a90d4f38d6778341d449d67953e5abcf6525ab3ac3ba06b35ed2f38e74dd56a52def159c5e47eca	explorer.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Rziiaaurjfniiv\93b9b6d9 = 74a79bfbd6e765ae097370f628945d3423295024ce08b976f19b65acf9ddce205b0fb4a60597	explorer.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Rziiaaurjfniiv\ecf0d92f = acecd2dc9dd39094bb7e8e8dbf5b9692cb2b8c29d7bf9c38b7fcb161d5e74ab29bba21db1ef0740efe1875cf8162b587b56c7eabe2df59bf711d19adc2dc6b6a8980211d11325da6a635ee5460da0323914cd06172f1f6ae	explorer.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Rziiaaurjfniiv	explorer.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Rziiaaurjfniiv\ecf0d92f = acecc5dc9dd3a58d1fc292b95c09872755a0d7532eea3b897daf3889dd027aa9fca7f841c34b9ba989a9b0b9584f1ec6c0ce5ce390eeb2ac08939c6982856d05d57d3d	explorer.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Rziiaaurjfniiv\d96f0961 = a7d38745d45bd92d155819377bd75a7f572fc63a26a424c9d9c243fbf8e219c0f852245559f6668cf367d3dd70929666a43bb31dfec708e4cbd39ab8dc195f50210fd5f6e02d85b253352c34ae184712150608ba17ba13960ac16503395a0e3ba04f9aba951e0e7560ee494a5aa4e1e62cebef06567e6d0cb50835f978221d080f06614c4b266a4120d14491e81167a42d8793296f10797c9aa7995475427c8a2abef376e5f4d4e59d8cd7550b63f9c350	explorer.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

rundll32.exeregsvr32.exe

pid process

956 rundll32.exe
1176 regsvr32.exe
Suspicious behavior: MapViewOfSection 2 IoCs

Processes:

rundll32.exeregsvr32.exe

pid process

956 rundll32.exe
1176 regsvr32.exe

pid	process
956	rundll32.exe
1176	regsvr32.exe

pid	process
956	rundll32.exe
1176	regsvr32.exe

Suspicious use of WriteProcessMemory 43 IoCs

Processes:

rundll32.exerundll32.exeexplorer.exetaskeng.exeregsvr32.exeregsvr32.exeexplorer.exe

description	pid	process	target process
PID 732 wrote to memory of 956	732	rundll32.exe	rundll32.exe
PID 732 wrote to memory of 956	732	rundll32.exe	rundll32.exe
PID 732 wrote to memory of 956	732	rundll32.exe	rundll32.exe
PID 732 wrote to memory of 956	732	rundll32.exe	rundll32.exe
PID 732 wrote to memory of 956	732	rundll32.exe	rundll32.exe
PID 732 wrote to memory of 956	732	rundll32.exe	rundll32.exe
PID 732 wrote to memory of 956	732	rundll32.exe	rundll32.exe
PID 956 wrote to memory of 848	956	rundll32.exe	explorer.exe
PID 956 wrote to memory of 848	956	rundll32.exe	explorer.exe
PID 956 wrote to memory of 848	956	rundll32.exe	explorer.exe
PID 956 wrote to memory of 848	956	rundll32.exe	explorer.exe
PID 956 wrote to memory of 848	956	rundll32.exe	explorer.exe
PID 956 wrote to memory of 848	956	rundll32.exe	explorer.exe
PID 848 wrote to memory of 628	848	explorer.exe	schtasks.exe
PID 848 wrote to memory of 628	848	explorer.exe	schtasks.exe
PID 848 wrote to memory of 628	848	explorer.exe	schtasks.exe
PID 848 wrote to memory of 628	848	explorer.exe	schtasks.exe
PID 1924 wrote to memory of 1548	1924	taskeng.exe	regsvr32.exe
PID 1924 wrote to memory of 1548	1924	taskeng.exe	regsvr32.exe
PID 1924 wrote to memory of 1548	1924	taskeng.exe	regsvr32.exe
PID 1924 wrote to memory of 1548	1924	taskeng.exe	regsvr32.exe
PID 1924 wrote to memory of 1548	1924	taskeng.exe	regsvr32.exe
PID 1548 wrote to memory of 1176	1548	regsvr32.exe	regsvr32.exe
PID 1548 wrote to memory of 1176	1548	regsvr32.exe	regsvr32.exe
PID 1548 wrote to memory of 1176	1548	regsvr32.exe	regsvr32.exe
PID 1548 wrote to memory of 1176	1548	regsvr32.exe	regsvr32.exe
PID 1548 wrote to memory of 1176	1548	regsvr32.exe	regsvr32.exe
PID 1548 wrote to memory of 1176	1548	regsvr32.exe	regsvr32.exe
PID 1548 wrote to memory of 1176	1548	regsvr32.exe	regsvr32.exe
PID 1176 wrote to memory of 1060	1176	regsvr32.exe	explorer.exe
PID 1176 wrote to memory of 1060	1176	regsvr32.exe	explorer.exe
PID 1176 wrote to memory of 1060	1176	regsvr32.exe	explorer.exe
PID 1176 wrote to memory of 1060	1176	regsvr32.exe	explorer.exe
PID 1176 wrote to memory of 1060	1176	regsvr32.exe	explorer.exe
PID 1176 wrote to memory of 1060	1176	regsvr32.exe	explorer.exe
PID 1060 wrote to memory of 852	1060	explorer.exe	reg.exe
PID 1060 wrote to memory of 852	1060	explorer.exe	reg.exe
PID 1060 wrote to memory of 852	1060	explorer.exe	reg.exe
PID 1060 wrote to memory of 852	1060	explorer.exe	reg.exe
PID 1060 wrote to memory of 1904	1060	explorer.exe	reg.exe
PID 1060 wrote to memory of 1904	1060	explorer.exe	reg.exe
PID 1060 wrote to memory of 1904	1060	explorer.exe	reg.exe
PID 1060 wrote to memory of 1904	1060	explorer.exe	reg.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\1.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:732

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\1.dll,#1
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:956

C:\Windows\SysWOW64\explorer.exe
C:\Windows\SysWOW64\explorer.exe
3⤵
- Suspicious use of WriteProcessMemory
PID:848

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\system32\schtasks.exe" /Create /RU "NT AUTHORITY\SYSTEM" /tn rnfspbonka /tr "regsvr32.exe -s \"C:\Users\Admin\AppData\Local\Temp\1.dll\"" /SC ONCE /Z /ST 14:40 /ET 14:52
4⤵
- Creates scheduled task(s)
PID:628

C:\Windows\system32\taskeng.exe
taskeng.exe {F8A9A519-4CE6-473E-8510-7D9E1B52E49A} S-1-5-18:NT AUTHORITY\System:Service:
1⤵
- Suspicious use of WriteProcessMemory
PID:1924

C:\Windows\system32\regsvr32.exe
regsvr32.exe -s "C:\Users\Admin\AppData\Local\Temp\1.dll"
2⤵
- Suspicious use of WriteProcessMemory
PID:1548

C:\Windows\SysWOW64\regsvr32.exe
-s "C:\Users\Admin\AppData\Local\Temp\1.dll"
3⤵
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:1176

C:\Windows\SysWOW64\explorer.exe
C:\Windows\SysWOW64\explorer.exe
4⤵
- Modifies data under HKEY_USERS
- Suspicious use of WriteProcessMemory
PID:1060

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\Rjdtxrue" /d "0"
5⤵
PID:852

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\Reucpa" /d "0"
5⤵
PID:1904

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\1.dll
MD5
8d24810baf00c916c460f650b3635908

SHA1
cb437477a87258436dadf1984fdb0569ce5921e5

SHA256
33af9ecd4f11b66e3a1dc74477dd8614533eaea80d67fdda26cc948f7d693e2f

SHA512
2e6520a7eedfc9ae3875bbd7b14e3959afa4e09ad06448a132d2aabcb102ae90aca3d66e7119530d63ba6e97371f67f72b7538f0ec41a50897e7b510f2f2b48b

Download Submit
\Users\Admin\AppData\Local\Temp\1.dll
MD5
8d24810baf00c916c460f650b3635908

SHA1
cb437477a87258436dadf1984fdb0569ce5921e5

SHA256
33af9ecd4f11b66e3a1dc74477dd8614533eaea80d67fdda26cc948f7d693e2f

SHA512
2e6520a7eedfc9ae3875bbd7b14e3959afa4e09ad06448a132d2aabcb102ae90aca3d66e7119530d63ba6e97371f67f72b7538f0ec41a50897e7b510f2f2b48b

Download Submit
memory/848-63-0x00000000000B0000-0x00000000000B2000-memory.dmp

Filesize
8KB

Download
memory/848-66-0x0000000000080000-0x00000000000A1000-memory.dmp

Filesize
132KB

Download
memory/848-65-0x0000000074F01000-0x0000000074F03000-memory.dmp

Filesize
8KB

Download
memory/956-59-0x0000000000370000-0x0000000000391000-memory.dmp

Filesize
132KB

Download
memory/956-58-0x0000000000370000-0x0000000000391000-memory.dmp

Filesize
132KB

Download
memory/956-62-0x0000000000370000-0x0000000000391000-memory.dmp

Filesize
132KB

Download
memory/956-55-0x00000000763B1000-0x00000000763B3000-memory.dmp

Filesize
8KB

Download
memory/956-60-0x0000000000370000-0x0000000000391000-memory.dmp

Filesize
132KB

Download
memory/956-57-0x0000000000370000-0x0000000000391000-memory.dmp

Filesize
132KB

Download
memory/956-56-0x00000000007C0000-0x0000000000860000-memory.dmp

Filesize
640KB

Download
memory/956-61-0x00000000002D0000-0x0000000000313000-memory.dmp

Filesize
268KB

Download
memory/1060-80-0x0000000000080000-0x00000000000A1000-memory.dmp

Filesize
132KB

Download
memory/1176-71-0x00000000009B0000-0x0000000000A50000-memory.dmp

Filesize
640KB

Download
memory/1176-72-0x0000000000270000-0x0000000000291000-memory.dmp

Filesize
132KB

Download
memory/1176-73-0x0000000000270000-0x0000000000291000-memory.dmp

Filesize
132KB

Download
memory/1176-75-0x0000000000270000-0x0000000000291000-memory.dmp

Filesize
132KB

Download
memory/1176-74-0x0000000000270000-0x0000000000291000-memory.dmp

Filesize
132KB

Download
memory/1176-76-0x0000000000270000-0x0000000000291000-memory.dmp

Filesize
132KB

Download
memory/1548-67-0x000007FEFC241000-0x000007FEFC243000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads