qakbot | 4f05dead9fed88cae228de29b170ef42b5657e8587dcd4f8611ad9c26a744021

General

Target

4f05dead9fed88cae228de29b170ef42b5657e8587dcd4f8611ad9c26a744021.dll
Size

1.8MB
MD5

bbb43912a056489c72e2d1bd3bf88a95
SHA1

cab48f0d058feb68de923781929e6f3f3d935b7f
SHA256

4f05dead9fed88cae228de29b170ef42b5657e8587dcd4f8611ad9c26a744021
SHA512

3ca53f3ef71d2d6af87cacbb7356fd4cb588f3b8b3c3f7d947c6c1297e2402b806cbbb537d4bb75990151d459a5a6f4be44fd656b76d72daa6c5a23581b3ab14

Score

10^/10

qakbot cullinan 1640170781 banker evasion stealer trojan

Malware Config

Extracted

Family

qakbot

Version

403.10

Botnet

cullinan

Campaign

1640170781

C2

14.96.108.245:61202

182.191.92.203:995

136.232.34.70:443

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

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

1940 regsvr32.exe

pid	process
1940	regsvr32.exe

Drops file in System32 directory 2 IoCs

Processes:

regsvr32.exeregsvr32.exe

description	ioc	process
File opened for modification	C:\Windows\System32\CatRoot2\dberr.txt	regsvr32.exe
File opened for modification	C:\Windows\System32\CatRoot2\dberr.txt	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

1520 schtasks.exe

pid	process
1520	schtasks.exe

Modifies data under HKEY_USERS 10 IoCs

Processes:

explorer.exe

description	ioc	process
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Eoayanumtlzi\46ae41df = 1a32d74dc96f7fbdc47717389a69c9e82a1a9a54d987e972d6a9426b06a4c47273a5335e48914dbc8370b1a902839433255041ef3f42ea2bcb0a65c89b47da8b7c1e330c6029	explorer.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Eoayanumtlzi\73319191 = 10af9aad854b6afb35f884dc8c506fd8de1a9ddb475d1fe7ec5d7c341cea51778f022405df23a6d78b9a5bc420503b87f1ddefc9ef1852bee3056b1de045c491d9646e62e11aa2b805befe405a78e01527f5da83e98f9798ad9f0014da1b0709b069a6e91bfe0b5e057fadd6d2ffd9e218bac42d4393efd99a17baa08fc17efb2ee0097f7dcd7122fd5e3f43471ca4e6707f0c62462a7929ace1622d582f	explorer.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Eoayanumtlzi\c9ccd688 = 9ba09aeb9db47d7a2fd3bf9edacb281f30dd9b769472e371b2f4d9	explorer.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Eoayanumtlzi\c78fe67 = bbf977ec4125b727e87d8d2d7b25	explorer.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Eoayanumtlzi\cb8df6f4 = 53681af4c023a4991fbece78bcf2bf9aa66503699fd461eb4d21505d72b83efbe92eb05793cfa9649e798954cd22a35d29c9f7bc76709d6055a241906a7d6664c83ba9a1f5380c6b90259c91d7e2f5c0fc2d5115d4aa9d74773a306d807f6b894ed804937dd93461b62d0713cdb6	explorer.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Eoayanumtlzi\39e72e29 = b68ca75c53acad98fe28d508e50cb5083250d6263bf630a5ca2e299f2bba29592a6c83	explorer.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Eoayanumtlzi	explorer.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Eoayanumtlzi\b4c49902 = 33504552e512ab93136b128d8dcd372fa9d093dbe9ca6a027c6fb1344d8112190efc5c5543bc5291731ef76197179a0956c8440299a3f7171c7c78c3f9788e6135b515b9040c12	explorer.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Eoayanumtlzi\46ae41df = 1a32c04dc96f4a0282c1eb64ecd8fdc5dae6f33d1b868ea7f722a0edc7065374095185ca9ba3425773472c3b9b7a203e7eb0b0accdddc30212fdb6bd3f61a4927fdb027cca62d2f1446bf728cd9cc4fb3ea9e242bb3fc60e30202c	explorer.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Eoayanumtlzi\7170b1ed = 7ec1353984ca6ef414f727ce9822e9da11fac494ca323eed1738512d23e767	explorer.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

regsvr32.exeregsvr32.exe

pid process

1688 regsvr32.exe
1940 regsvr32.exe
Suspicious behavior: MapViewOfSection 2 IoCs

Processes:

regsvr32.exeregsvr32.exe

pid process

1688 regsvr32.exe
1940 regsvr32.exe

Suspicious use of FindShellTrayWindow 40 IoCs

Processes:

regsvr32.exeregsvr32.exe

pid	process
1688	regsvr32.exe
1688	regsvr32.exe
1688	regsvr32.exe
1688	regsvr32.exe
1688	regsvr32.exe
1688	regsvr32.exe
1688	regsvr32.exe
1688	regsvr32.exe
1688	regsvr32.exe
1688	regsvr32.exe
1688	regsvr32.exe
1688	regsvr32.exe
1688	regsvr32.exe
1688	regsvr32.exe
1688	regsvr32.exe
1688	regsvr32.exe
1688	regsvr32.exe
1688	regsvr32.exe
1688	regsvr32.exe
1688	regsvr32.exe
1940	regsvr32.exe
1940	regsvr32.exe
1940	regsvr32.exe
1940	regsvr32.exe
1940	regsvr32.exe
1940	regsvr32.exe
1940	regsvr32.exe
1940	regsvr32.exe
1940	regsvr32.exe
1940	regsvr32.exe
1940	regsvr32.exe
1940	regsvr32.exe
1940	regsvr32.exe
1940	regsvr32.exe
1940	regsvr32.exe
1940	regsvr32.exe
1940	regsvr32.exe
1940	regsvr32.exe
1940	regsvr32.exe
1940	regsvr32.exe

Suspicious use of SendNotifyMessage 20 IoCs

Processes:

regsvr32.exe

pid	process
1688	regsvr32.exe
1688	regsvr32.exe
1688	regsvr32.exe
1688	regsvr32.exe
1688	regsvr32.exe
1688	regsvr32.exe
1688	regsvr32.exe
1688	regsvr32.exe
1688	regsvr32.exe
1688	regsvr32.exe
1688	regsvr32.exe
1688	regsvr32.exe
1688	regsvr32.exe
1688	regsvr32.exe
1688	regsvr32.exe
1688	regsvr32.exe
1688	regsvr32.exe
1688	regsvr32.exe
1688	regsvr32.exe
1688	regsvr32.exe

Suspicious use of WriteProcessMemory 43 IoCs

Processes:

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

description	pid	process	target process
PID 944 wrote to memory of 1688	944	regsvr32.exe	regsvr32.exe
PID 944 wrote to memory of 1688	944	regsvr32.exe	regsvr32.exe
PID 944 wrote to memory of 1688	944	regsvr32.exe	regsvr32.exe
PID 944 wrote to memory of 1688	944	regsvr32.exe	regsvr32.exe
PID 944 wrote to memory of 1688	944	regsvr32.exe	regsvr32.exe
PID 944 wrote to memory of 1688	944	regsvr32.exe	regsvr32.exe
PID 944 wrote to memory of 1688	944	regsvr32.exe	regsvr32.exe
PID 1688 wrote to memory of 720	1688	regsvr32.exe	explorer.exe
PID 1688 wrote to memory of 720	1688	regsvr32.exe	explorer.exe
PID 1688 wrote to memory of 720	1688	regsvr32.exe	explorer.exe
PID 1688 wrote to memory of 720	1688	regsvr32.exe	explorer.exe
PID 1688 wrote to memory of 720	1688	regsvr32.exe	explorer.exe
PID 1688 wrote to memory of 720	1688	regsvr32.exe	explorer.exe
PID 720 wrote to memory of 1520	720	explorer.exe	schtasks.exe
PID 720 wrote to memory of 1520	720	explorer.exe	schtasks.exe
PID 720 wrote to memory of 1520	720	explorer.exe	schtasks.exe
PID 720 wrote to memory of 1520	720	explorer.exe	schtasks.exe
PID 1524 wrote to memory of 1676	1524	taskeng.exe	regsvr32.exe
PID 1524 wrote to memory of 1676	1524	taskeng.exe	regsvr32.exe
PID 1524 wrote to memory of 1676	1524	taskeng.exe	regsvr32.exe
PID 1524 wrote to memory of 1676	1524	taskeng.exe	regsvr32.exe
PID 1524 wrote to memory of 1676	1524	taskeng.exe	regsvr32.exe
PID 1676 wrote to memory of 1940	1676	regsvr32.exe	regsvr32.exe
PID 1676 wrote to memory of 1940	1676	regsvr32.exe	regsvr32.exe
PID 1676 wrote to memory of 1940	1676	regsvr32.exe	regsvr32.exe
PID 1676 wrote to memory of 1940	1676	regsvr32.exe	regsvr32.exe
PID 1676 wrote to memory of 1940	1676	regsvr32.exe	regsvr32.exe
PID 1676 wrote to memory of 1940	1676	regsvr32.exe	regsvr32.exe
PID 1676 wrote to memory of 1940	1676	regsvr32.exe	regsvr32.exe
PID 1940 wrote to memory of 1752	1940	regsvr32.exe	explorer.exe
PID 1940 wrote to memory of 1752	1940	regsvr32.exe	explorer.exe
PID 1940 wrote to memory of 1752	1940	regsvr32.exe	explorer.exe
PID 1940 wrote to memory of 1752	1940	regsvr32.exe	explorer.exe
PID 1940 wrote to memory of 1752	1940	regsvr32.exe	explorer.exe
PID 1940 wrote to memory of 1752	1940	regsvr32.exe	explorer.exe
PID 1752 wrote to memory of 540	1752	explorer.exe	reg.exe
PID 1752 wrote to memory of 540	1752	explorer.exe	reg.exe
PID 1752 wrote to memory of 540	1752	explorer.exe	reg.exe
PID 1752 wrote to memory of 540	1752	explorer.exe	reg.exe
PID 1752 wrote to memory of 1732	1752	explorer.exe	reg.exe
PID 1752 wrote to memory of 1732	1752	explorer.exe	reg.exe
PID 1752 wrote to memory of 1732	1752	explorer.exe	reg.exe
PID 1752 wrote to memory of 1732	1752	explorer.exe	reg.exe

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\4f05dead9fed88cae228de29b170ef42b5657e8587dcd4f8611ad9c26a744021.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:944

C:\Windows\SysWOW64\regsvr32.exe
/s C:\Users\Admin\AppData\Local\Temp\4f05dead9fed88cae228de29b170ef42b5657e8587dcd4f8611ad9c26a744021.dll
2⤵
- Drops file in System32 directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1688

C:\Windows\SysWOW64\explorer.exe
C:\Windows\SysWOW64\explorer.exe
3⤵
- Suspicious use of WriteProcessMemory
PID:720

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\system32\schtasks.exe" /Create /RU "NT AUTHORITY\SYSTEM" /tn qxgatesks /tr "regsvr32.exe -s \"C:\Users\Admin\AppData\Local\Temp\4f05dead9fed88cae228de29b170ef42b5657e8587dcd4f8611ad9c26a744021.dll\"" /SC ONCE /Z /ST 08:02 /ET 08:14
4⤵
- Creates scheduled task(s)
PID:1520

C:\Windows\system32\taskeng.exe
taskeng.exe {6368F6E2-4BF3-49D2-AE98-5064DFAAEFD8} S-1-5-18:NT AUTHORITY\System:Service:
1⤵
- Suspicious use of WriteProcessMemory
PID:1524

C:\Windows\system32\regsvr32.exe
regsvr32.exe -s "C:\Users\Admin\AppData\Local\Temp\4f05dead9fed88cae228de29b170ef42b5657e8587dcd4f8611ad9c26a744021.dll"
2⤵
- Suspicious use of WriteProcessMemory
PID:1676

C:\Windows\SysWOW64\regsvr32.exe
-s "C:\Users\Admin\AppData\Local\Temp\4f05dead9fed88cae228de29b170ef42b5657e8587dcd4f8611ad9c26a744021.dll"
3⤵
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:1940

C:\Windows\SysWOW64\explorer.exe
C:\Windows\SysWOW64\explorer.exe
4⤵
- Modifies data under HKEY_USERS
- Suspicious use of WriteProcessMemory
PID:1752

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\Gnuudthqfg" /d "0"
5⤵
PID:540

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\Oheuu" /d "0"
5⤵
PID:1732

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\4f05dead9fed88cae228de29b170ef42b5657e8587dcd4f8611ad9c26a744021.dll
MD5
bbb43912a056489c72e2d1bd3bf88a95

SHA1
cab48f0d058feb68de923781929e6f3f3d935b7f

SHA256
4f05dead9fed88cae228de29b170ef42b5657e8587dcd4f8611ad9c26a744021

SHA512
3ca53f3ef71d2d6af87cacbb7356fd4cb588f3b8b3c3f7d947c6c1297e2402b806cbbb537d4bb75990151d459a5a6f4be44fd656b76d72daa6c5a23581b3ab14

Download Submit
C:\Windows\System32\CatRoot2\dberr.txt
MD5
04697973f5fb7ed26e0d795033d9c471

SHA1
fed517701e8d1bfb428b174493ee62721982aa14

SHA256
820042a0693bd5a848b1140a7c9778598062f83520a75497ace9f2465b8182d9

SHA512
8a28a1d099bb3a079f2353c9afbfaf99c2dae14f146e386369112dacedeed236d5cb5b63fe625be35bdb6eaef47967c205b3efcf768507c689441f10ba05ae34

Download Submit
\Users\Admin\AppData\Local\Temp\4f05dead9fed88cae228de29b170ef42b5657e8587dcd4f8611ad9c26a744021.dll
MD5
bbb43912a056489c72e2d1bd3bf88a95

SHA1
cab48f0d058feb68de923781929e6f3f3d935b7f

SHA256
4f05dead9fed88cae228de29b170ef42b5657e8587dcd4f8611ad9c26a744021

SHA512
3ca53f3ef71d2d6af87cacbb7356fd4cb588f3b8b3c3f7d947c6c1297e2402b806cbbb537d4bb75990151d459a5a6f4be44fd656b76d72daa6c5a23581b3ab14

Download Submit
memory/540-76-0x0000000000000000-mapping.dmp

Download
memory/720-59-0x0000000000080000-0x0000000000082000-memory.dmp

Filesize
8KB

Download
memory/720-60-0x0000000000000000-mapping.dmp

Download
memory/720-62-0x0000000074611000-0x0000000074613000-memory.dmp

Filesize
8KB

Download
memory/720-64-0x00000000000D0000-0x00000000000F1000-memory.dmp

Filesize
132KB

Download
memory/944-54-0x000007FEFBC11000-0x000007FEFBC13000-memory.dmp

Filesize
8KB

Download
memory/1520-63-0x0000000000000000-mapping.dmp

Download
memory/1676-65-0x0000000000000000-mapping.dmp

Download
memory/1688-58-0x0000000010000000-0x00000000101DC000-memory.dmp

Filesize
1.9MB

Download
memory/1688-57-0x0000000000330000-0x0000000000331000-memory.dmp

Filesize
4KB

Download
memory/1688-56-0x0000000076151000-0x0000000076153000-memory.dmp

Filesize
8KB

Download
memory/1688-55-0x0000000000000000-mapping.dmp

Download
memory/1732-77-0x0000000000000000-mapping.dmp

Download
memory/1752-73-0x0000000000000000-mapping.dmp

Download
memory/1752-78-0x0000000000080000-0x00000000000A1000-memory.dmp

Filesize
132KB

Download
memory/1940-68-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads