nymaim | 4a38dae46bc598a7381d99f79852218a1de5d62ef4e5b0bf981584cce6c8135e

General

Target

file.exe
Size

2.7MB
MD5

e35b4ba2a187becc23e753d3254523b1
SHA1

59d81bec25524b8a089f99f004dd7589c12482ad
SHA256

4a38dae46bc598a7381d99f79852218a1de5d62ef4e5b0bf981584cce6c8135e
SHA512

d6c3bff68d4800729ae288f81c2199a5059c5594b9b106a16efccc2c2dae569a034ac4e8b0ae5cb17039519512207b1831776fbe35859e7bba7fef0dfd3128e2
SSDEEP

49152:Z2HCVzMXehRYrroYGZ85BkT9A4/5vCom4S/rgJjtvZrKDVd+MA5hq:MHCtMcQrGZ85BChDmMJ5vcj+jDq

Score

10^/10

nymaim discovery trojan

Malware Config

Extracted

Family

nymaim

C2

45.139.105.171

85.31.46.167

Signatures

NyMaim
NyMaim is a malware with various capabilities written in C++ and first seen in 2013.
trojan nymaim

Executes dropped EXE 3 IoCs

pid	Process
4556	is-4BMCE.tmp
4212	fpsearcher69.exe
1700	K0pmtrI4D.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation	fpsearcher69.exe

Loads dropped DLL 1 IoCs

pid	Process
4556	is-4BMCE.tmp

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Drops file in Program Files directory 12 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\fpSearcher\is-2MDR5.tmp	is-4BMCE.tmp
File created	C:\Program Files (x86)\fpSearcher\is-PG92O.tmp	is-4BMCE.tmp
File created	C:\Program Files (x86)\fpSearcher\is-L3CD6.tmp	is-4BMCE.tmp
File opened for modification	C:\Program Files (x86)\fpSearcher\unins000.dat	is-4BMCE.tmp
File created	C:\Program Files (x86)\fpSearcher\unins000.dat	is-4BMCE.tmp
File created	C:\Program Files (x86)\fpSearcher\is-T249G.tmp	is-4BMCE.tmp
File created	C:\Program Files (x86)\fpSearcher\is-IMRMD.tmp	is-4BMCE.tmp
File created	C:\Program Files (x86)\fpSearcher\is-AO287.tmp	is-4BMCE.tmp
File created	C:\Program Files (x86)\fpSearcher\is-EGGJP.tmp	is-4BMCE.tmp
File created	C:\Program Files (x86)\fpSearcher\is-1EA0T.tmp	is-4BMCE.tmp
File created	C:\Program Files (x86)\fpSearcher\is-CQD7K.tmp	is-4BMCE.tmp
File opened for modification	C:\Program Files (x86)\fpSearcher\fpsearcher69.exe	is-4BMCE.tmp

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

System Information Discovery
T1082

Kills process with taskkill 1 IoCs

evasion

pid	Process
3356	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
4212	fpsearcher69.exe
4212	fpsearcher69.exe
4212	fpsearcher69.exe
4212	fpsearcher69.exe
4212	fpsearcher69.exe
4212	fpsearcher69.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3356	taskkill.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 4400 wrote to memory of 4556	4400	file.exe	79
PID 4400 wrote to memory of 4556	4400	file.exe	79
PID 4400 wrote to memory of 4556	4400	file.exe	79
PID 4556 wrote to memory of 4212	4556	is-4BMCE.tmp	80
PID 4556 wrote to memory of 4212	4556	is-4BMCE.tmp	80
PID 4556 wrote to memory of 4212	4556	is-4BMCE.tmp	80
PID 4212 wrote to memory of 1700	4212	fpsearcher69.exe	85
PID 4212 wrote to memory of 1700	4212	fpsearcher69.exe	85
PID 4212 wrote to memory of 1700	4212	fpsearcher69.exe	85
PID 4212 wrote to memory of 4392	4212	fpsearcher69.exe	90
PID 4212 wrote to memory of 4392	4212	fpsearcher69.exe	90
PID 4212 wrote to memory of 4392	4212	fpsearcher69.exe	90
PID 4392 wrote to memory of 3356	4392	cmd.exe	92
PID 4392 wrote to memory of 3356	4392	cmd.exe	92
PID 4392 wrote to memory of 3356	4392	cmd.exe	92

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:4400
- C:\Users\Admin\AppData\Local\Temp\is-V2R1A.tmp\is-4BMCE.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-V2R1A.tmp\is-4BMCE.tmp" /SL4 $D0050 "C:\Users\Admin\AppData\Local\Temp\file.exe" 2629896 52736
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in Program Files directory
  - Suspicious use of WriteProcessMemory
  PID:4556
- - C:\Program Files (x86)\fpSearcher\fpsearcher69.exe
    "C:\Program Files (x86)\fpSearcher\fpsearcher69.exe"
    3⤵
    - Executes dropped EXE
    - Checks computer location settings
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:4212
  - - C:\Users\Admin\AppData\Roaming\{1ca2f389-1ab8-11ed-aebb-806e6f6e6963}\K0pmtrI4D.exe
      4⤵
      Executes dropped EXE
      PID:1700
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "fpsearcher69.exe" /f & erase "C:\Program Files (x86)\fpSearcher\fpsearcher69.exe" & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:4392
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "fpsearcher69.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:3356

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Program Files (x86)\fpSearcher\fpsearcher69.exe

Filesize
4.2MB

MD5
1fbe36c0155418a61ecca261e1a4bc5b

SHA1
5ee7e3e7ffdd7cc6110f42806f4bccfd01fc8779

SHA256
7f1c28c5f2b9ec5be4dbbe7bdb01ee5565851a593f97dda95d2fcc223fed2766

SHA512
57cd23f22698ca2f7b8e649c8b308924359cf5d600f5d6b3aa84ce60cc2b407ec932084a377f8a1431f34c367bc7b779b1e4d0438fd03bb0d552e3ea6ccf1bb7

Download Submit
C:\Program Files (x86)\fpSearcher\fpsearcher69.exe

Filesize
4.2MB

MD5
1fbe36c0155418a61ecca261e1a4bc5b

SHA1
5ee7e3e7ffdd7cc6110f42806f4bccfd01fc8779

SHA256
7f1c28c5f2b9ec5be4dbbe7bdb01ee5565851a593f97dda95d2fcc223fed2766

SHA512
57cd23f22698ca2f7b8e649c8b308924359cf5d600f5d6b3aa84ce60cc2b407ec932084a377f8a1431f34c367bc7b779b1e4d0438fd03bb0d552e3ea6ccf1bb7

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-0IQ1V.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-V2R1A.tmp\is-4BMCE.tmp

Filesize
657KB

MD5
7cd12c54a9751ca6eee6ab0c85fb68f5

SHA1
76562e9b7888b6d20d67addb5a90b68b54a51987

SHA256
e82cabb027db8846c3430be760f137afa164c36f9e1b93a6e34c96de0b2c5a5f

SHA512
27ba5d2f719aaac2ead6fb42f23af3aa866f75026be897cd2f561f3e383904e89e6043bd22b4ae24f69787bd258a68ff696c09c03d656cbf7c79c2a52d8d82cc

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-V2R1A.tmp\is-4BMCE.tmp

Filesize
657KB

MD5
7cd12c54a9751ca6eee6ab0c85fb68f5

SHA1
76562e9b7888b6d20d67addb5a90b68b54a51987

SHA256
e82cabb027db8846c3430be760f137afa164c36f9e1b93a6e34c96de0b2c5a5f

SHA512
27ba5d2f719aaac2ead6fb42f23af3aa866f75026be897cd2f561f3e383904e89e6043bd22b4ae24f69787bd258a68ff696c09c03d656cbf7c79c2a52d8d82cc

Download Submit
C:\Users\Admin\AppData\Roaming\{1ca2f389-1ab8-11ed-aebb-806e6f6e6963}\K0pmtrI4D.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
C:\Users\Admin\AppData\Roaming\{1ca2f389-1ab8-11ed-aebb-806e6f6e6963}\K0pmtrI4D.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
memory/4212-143-0x0000000000400000-0x0000000001630000-memory.dmp

Filesize
18.2MB

Download
memory/4212-144-0x0000000000400000-0x0000000001630000-memory.dmp

Filesize
18.2MB

Download
memory/4212-142-0x0000000000400000-0x0000000001630000-memory.dmp

Filesize
18.2MB

Download
memory/4212-148-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download
memory/4212-152-0x0000000000400000-0x0000000001630000-memory.dmp

Filesize
18.2MB

Download
memory/4212-155-0x0000000000400000-0x0000000001630000-memory.dmp

Filesize
18.2MB

Download
memory/4400-132-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4400-137-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4400-156-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download

Analysis

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