dridex | 8cc5917a2fe27efc03ea4cdcc77b00fa7a8551f38d393735ebc0923a87961edd

Analysis

max time kernel
150s
max time network
119s
platform
windows7_x64
resource
win7-20240705-en
resource tags

arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-x64system
submitted
29-07-2024 01:50

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General

Target

31a99257d7f59c024665683ec80d1f5f_JaffaCakes118.dll
Size

1.2MB
MD5

31a99257d7f59c024665683ec80d1f5f
SHA1

61d6669a7e007b64b69bdf93d0a39f232fc3e7e4
SHA256

8cc5917a2fe27efc03ea4cdcc77b00fa7a8551f38d393735ebc0923a87961edd
SHA512

c4fd03de3aedf2ae3bc58a744080b13ade5b66617046b33458ab11fc77b22d743f7144eb7705e97be0bad7a0844f643e5af901d07a1eab50ea8de79cc4c6da79
SSDEEP

24576:vuYfg4LhHr4NFXKJO1aUiDBvZ2+ITHmpclO9N:R9cKrUqZWLAcU

Score

10^/10

dridex botnet evasion payload persistence trojan

Malware Config

Signatures

Dridex
Dridex(known as Bugat/Cridex) is a form of malware that specializes in stealing bank credentials.
botnet dridex

Dridex Shellcode 1 IoCs

Detects Dridex Payload shellcode injected in Explorer process.

botnet payload

Processes:

resource	yara_rule
behavioral1/memory/1200-5-0x0000000002560000-0x0000000002561000-memory.dmp	dridex_stager_shellcode

Executes dropped EXE 3 IoCs

Processes:

EhStorAuthn.exeirftp.execalc.exe

pid	Process
3032	EhStorAuthn.exe
1424	irftp.exe
2992	calc.exe

Loads dropped DLL 7 IoCs

Processes:

EhStorAuthn.exeirftp.execalc.exe

pid	Process
1200
3032	EhStorAuthn.exe
1200
1424	irftp.exe
1200
2992	calc.exe
1200

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2172136094-3310281978-782691160-1000\Software\Microsoft\Windows\CurrentVersion\Run\Qiarkhdaw = "C:\\Users\\Admin\\AppData\\Roaming\\Identities\\9fCD\\irftp.exe"

Checks whether UAC is enabled 1 TTPs 4 IoCs

evasion trojan

System Information Discovery

T1082

Processes:

rundll32.exeEhStorAuthn.exeirftp.execalc.exe

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	rundll32.exe
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	EhStorAuthn.exe
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	irftp.exe
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	calc.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

rundll32.exe

pid	Process
1820	rundll32.exe
1820	rundll32.exe
1820	rundll32.exe
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Suspicious use of WriteProcessMemory 18 IoCs

Processes:

description	pid	procid_target
PID 1200 wrote to memory of 2772	1200	31
PID 1200 wrote to memory of 2772	1200	31
PID 1200 wrote to memory of 2772	1200	31
PID 1200 wrote to memory of 3032	1200	32
PID 1200 wrote to memory of 3032	1200	32
PID 1200 wrote to memory of 3032	1200	32
PID 1200 wrote to memory of 836	1200	33
PID 1200 wrote to memory of 836	1200	33
PID 1200 wrote to memory of 836	1200	33
PID 1200 wrote to memory of 1424	1200	34
PID 1200 wrote to memory of 1424	1200	34
PID 1200 wrote to memory of 1424	1200	34
PID 1200 wrote to memory of 1448	1200	35
PID 1200 wrote to memory of 1448	1200	35
PID 1200 wrote to memory of 1448	1200	35
PID 1200 wrote to memory of 2992	1200	36
PID 1200 wrote to memory of 2992	1200	36
PID 1200 wrote to memory of 2992	1200	36

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\31a99257d7f59c024665683ec80d1f5f_JaffaCakes118.dll,#1
1⤵
- Checks whether UAC is enabled
- Suspicious behavior: EnumeratesProcesses
PID:1820

C:\Windows\system32\EhStorAuthn.exe
C:\Windows\system32\EhStorAuthn.exe
1⤵
PID:2772

C:\Users\Admin\AppData\Local\DOp\EhStorAuthn.exe
C:\Users\Admin\AppData\Local\DOp\EhStorAuthn.exe
1⤵
- Executes dropped EXE
- Loads dropped DLL
- Checks whether UAC is enabled
PID:3032

C:\Windows\system32\irftp.exe
C:\Windows\system32\irftp.exe
1⤵
PID:836

C:\Users\Admin\AppData\Local\vRf\irftp.exe
C:\Users\Admin\AppData\Local\vRf\irftp.exe
1⤵
- Executes dropped EXE
- Loads dropped DLL
- Checks whether UAC is enabled
PID:1424

C:\Windows\system32\calc.exe
C:\Windows\system32\calc.exe
1⤵
PID:1448

C:\Users\Admin\AppData\Local\dWlZ8NQ7I\calc.exe
C:\Users\Admin\AppData\Local\dWlZ8NQ7I\calc.exe
1⤵
- Executes dropped EXE
- Loads dropped DLL
- Checks whether UAC is enabled
PID:2992

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\DOp\UxTheme.dll

Filesize
1.2MB

MD5
c0ae21402095dec91e5a81a5343f0bd6

SHA1
6894845066a9102f815da97b46013ba52814d0a5

SHA256
212b6cc4b2740f6561000f11061a8b2c0828f1bc36b67f2a03713cee10e9d837

SHA512
afeb434843c09870eae6f2fe6ea156530ae06e59740915259deaeee566d43247151bbfc9e8cd45cc671193bac0246e54fe049d5f52bff65a2f7950966ade01e1

Download Submit
C:\Users\Admin\AppData\Local\vRf\WTSAPI32.dll

Filesize
1.2MB

MD5
448dce67366df3349e4f6b9d1f9313b6

SHA1
6480190fb7c5f131d8862f37afd37fcb2f8933f6

SHA256
3f17fa678cc16efcc039ae801d14824b781bab09e5691d3962d32f329b29dee9

SHA512
200837aaa419a1935ba5fbebf859ad8ddcb4fb1d2c4b008601654b3f6d38fe2cf58164ea95b79f7229c36aefb967e881c9476c31b18a7bcf3d7a4f3ca4c8ea6e

Download Submit
C:\Users\Admin\AppData\Roaming\MICROS~1\Windows\STARTM~1\Programs\Startup\Nhelokvclymi.lnk

Filesize
1KB

MD5
c6f7ec8aba6d22b18b95e712c5ebc7c5

SHA1
a81136ef7945bc33f8c569ca1ff42307be5af9e8

SHA256
f635a2867529ac9124f64b7fbe9b8c2d67d9c175a0ac943b09e772b3cef22e56

SHA512
f9ce59e273b2034d1315aab30d66be7a160fa2f13fc547eea3238b60b993a7874a44e3d006322b41844c3588af9b64a47094e4e92cee349eb01e97a08ba870c3

Download Submit
\Users\Admin\AppData\Local\DOp\EhStorAuthn.exe

Filesize
137KB

MD5
3abe95d92c80dc79707d8e168d79a994

SHA1
64b10c17f602d3f21c84954541e7092bc55bb5ab

SHA256
2159d9d5c9355521de859d1c40907fcdfef19f8cf68eda7485b89e9aa119e3ad

SHA512
70fee5e87121229bba5c5e5aaa9f028ac0546dc9d38b7a00a81b882c8f8ce4abfdc364a598976b1463cca05e9400db715f8a4478ec61b03a693bbeee18c6ae5c

Download Submit
\Users\Admin\AppData\Local\dWlZ8NQ7I\VERSION.dll

Filesize
1.2MB

MD5
3b27380ad32fd0fd896ccbd36731e43f

SHA1
e501236a67af5f9fff7feb05655d2cc03bbbdf29

SHA256
61561b077a8007b13f56ca32e57faafcd287b40727d90bc22fa85dd7cecbe732

SHA512
7d1fe2cc7d1582b5c500e1c085042f2eeccf21798e7cbccacaab96ccf8bc0f083a25e90f24b8288f3feb3c1e1d3d813b8886f622147cbc22889d5d67d168da19

Download Submit
\Users\Admin\AppData\Local\dWlZ8NQ7I\calc.exe

Filesize
897KB

MD5
10e4a1d2132ccb5c6759f038cdb6f3c9

SHA1
42d36eeb2140441b48287b7cd30b38105986d68f

SHA256
c6a91cba00bf87cdb064c49adaac82255cbec6fdd48fd21f9b3b96abf019916b

SHA512
9bd44afb164ab3e09a784c765cd03838d2e5f696c549fc233eb5a69cada47a8e1fb62095568cb272a80da579d9d0e124b1c27cf61bb2ac8cf6e584a722d8864d

Download Submit
\Users\Admin\AppData\Local\vRf\irftp.exe

Filesize
192KB

MD5
0cae1fb725c56d260bfd6feba7ae9a75

SHA1
102ac676a1de3ec3d56401f8efd518c31c8b0b80

SHA256
312f4107ff37dc988d99c5f56178708bb74a3906740cff4e337c0dde8f1e151d

SHA512
db969064577c4158d6bf925354319766b0d0373ddefb03dbfc9a9d2cadf8ddcd50a7f99b7ddf2ffad5e7fdbb6f02090b5b678bdf792d265054bff3b56ee0b8ec

Download Submit
memory/1200-16-0x0000000140000000-0x0000000140130000-memory.dmp

Filesize
1.2MB

Download
memory/1200-9-0x0000000140000000-0x0000000140130000-memory.dmp

Filesize
1.2MB

Download
memory/1200-4-0x0000000077696000-0x0000000077697000-memory.dmp

Filesize
4KB

Download
memory/1200-25-0x0000000002540000-0x0000000002547000-memory.dmp

Filesize
28KB

Download
memory/1200-27-0x0000000077A30000-0x0000000077A32000-memory.dmp

Filesize
8KB

Download
memory/1200-26-0x00000000778A1000-0x00000000778A2000-memory.dmp

Filesize
4KB

Download
memory/1200-15-0x0000000140000000-0x0000000140130000-memory.dmp

Filesize
1.2MB

Download
memory/1200-24-0x0000000140000000-0x0000000140130000-memory.dmp

Filesize
1.2MB

Download
memory/1200-14-0x0000000140000000-0x0000000140130000-memory.dmp

Filesize
1.2MB

Download
memory/1200-13-0x0000000140000000-0x0000000140130000-memory.dmp

Filesize
1.2MB

Download
memory/1200-11-0x0000000140000000-0x0000000140130000-memory.dmp

Filesize
1.2MB

Download
memory/1200-36-0x0000000140000000-0x0000000140130000-memory.dmp

Filesize
1.2MB

Download
memory/1200-37-0x0000000140000000-0x0000000140130000-memory.dmp

Filesize
1.2MB

Download
memory/1200-5-0x0000000002560000-0x0000000002561000-memory.dmp

Filesize
4KB

Download
memory/1200-10-0x0000000140000000-0x0000000140130000-memory.dmp

Filesize
1.2MB

Download
memory/1200-8-0x0000000140000000-0x0000000140130000-memory.dmp

Filesize
1.2MB

Download
memory/1200-7-0x0000000140000000-0x0000000140130000-memory.dmp

Filesize
1.2MB

Download
memory/1200-12-0x0000000140000000-0x0000000140130000-memory.dmp

Filesize
1.2MB

Download
memory/1200-64-0x0000000077696000-0x0000000077697000-memory.dmp

Filesize
4KB

Download
memory/1424-72-0x000007FEF63B0000-0x000007FEF64E1000-memory.dmp

Filesize
1.2MB

Download
memory/1424-75-0x00000000002B0000-0x00000000002B7000-memory.dmp

Filesize
28KB

Download
memory/1424-78-0x000007FEF63B0000-0x000007FEF64E1000-memory.dmp

Filesize
1.2MB

Download
memory/1820-45-0x000007FEF6840000-0x000007FEF6970000-memory.dmp

Filesize
1.2MB

Download
memory/1820-0-0x00000000003A0000-0x00000000003A7000-memory.dmp

Filesize
28KB

Download
memory/1820-1-0x000007FEF6840000-0x000007FEF6970000-memory.dmp

Filesize
1.2MB

Download
memory/2992-90-0x0000000000310000-0x0000000000317000-memory.dmp

Filesize
28KB

Download
memory/2992-91-0x000007FEF6830000-0x000007FEF6961000-memory.dmp

Filesize
1.2MB

Download
memory/2992-96-0x000007FEF6830000-0x000007FEF6961000-memory.dmp

Filesize
1.2MB

Download
memory/3032-59-0x000007FEF6F00000-0x000007FEF7031000-memory.dmp

Filesize
1.2MB

Download
memory/3032-56-0x0000000000110000-0x0000000000117000-memory.dmp

Filesize
28KB

Download
memory/3032-53-0x000007FEF6F00000-0x000007FEF7031000-memory.dmp

Filesize
1.2MB

Download