nymaim | c5fb0d6f6abd3754f49642dbec140a38f84572d6237e7b38bd9cdf6b3ca53efc

General

Target

file.exe
Size

2.9MB
MD5

4b3e8f9819536ac22b59750be190f01b
SHA1

d82bfedaaa1b3f1eb93d0fdda6108c45f0576e3e
SHA256

c5fb0d6f6abd3754f49642dbec140a38f84572d6237e7b38bd9cdf6b3ca53efc
SHA512

dd5f6cbce336a2870cbe4dfa8b8b9ceb4132e8cdba6f380b240c0540500fd1ed1f1dbb0fd1de178ad73694e8f0f5da3bf1bfaaaaa2b58c09c3654b66d70c104d
SSDEEP

49152:Z2xyO16wfPcl9uswRwNdH/IIZI5eO2UdGOj177WyA6+OKAFwsvFY1/1dtA5hq:Mxy46wMTXN5gw+wUVpyyxBZ96t1d+Dq

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
1944	is-D0A2O.tmp
396	ftsearcher71.exe
3320	lM3fHBz.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-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation	ftsearcher71.exe

Loads dropped DLL 1 IoCs

pid	Process
1944	is-D0A2O.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)\ftSearcher\is-AVT09.tmp	is-D0A2O.tmp
File created	C:\Program Files (x86)\ftSearcher\is-0LJRD.tmp	is-D0A2O.tmp
File created	C:\Program Files (x86)\ftSearcher\is-EKUPM.tmp	is-D0A2O.tmp
File created	C:\Program Files (x86)\ftSearcher\is-C52JM.tmp	is-D0A2O.tmp
File opened for modification	C:\Program Files (x86)\ftSearcher\ftsearcher71.exe	is-D0A2O.tmp
File created	C:\Program Files (x86)\ftSearcher\unins000.dat	is-D0A2O.tmp
File created	C:\Program Files (x86)\ftSearcher\is-63H1T.tmp	is-D0A2O.tmp
File created	C:\Program Files (x86)\ftSearcher\is-HKLJ5.tmp	is-D0A2O.tmp
File created	C:\Program Files (x86)\ftSearcher\is-14JR6.tmp	is-D0A2O.tmp
File created	C:\Program Files (x86)\ftSearcher\is-0801A.tmp	is-D0A2O.tmp
File opened for modification	C:\Program Files (x86)\ftSearcher\unins000.dat	is-D0A2O.tmp
File created	C:\Program Files (x86)\ftSearcher\is-BAS7G.tmp	is-D0A2O.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
4092	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
396	ftsearcher71.exe
396	ftsearcher71.exe
396	ftsearcher71.exe
396	ftsearcher71.exe
396	ftsearcher71.exe
396	ftsearcher71.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4092	taskkill.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2632 wrote to memory of 1944	2632	file.exe	81
PID 2632 wrote to memory of 1944	2632	file.exe	81
PID 2632 wrote to memory of 1944	2632	file.exe	81
PID 1944 wrote to memory of 396	1944	is-D0A2O.tmp	82
PID 1944 wrote to memory of 396	1944	is-D0A2O.tmp	82
PID 1944 wrote to memory of 396	1944	is-D0A2O.tmp	82
PID 396 wrote to memory of 3320	396	ftsearcher71.exe	83
PID 396 wrote to memory of 3320	396	ftsearcher71.exe	83
PID 396 wrote to memory of 3320	396	ftsearcher71.exe	83
PID 396 wrote to memory of 5084	396	ftsearcher71.exe	92
PID 396 wrote to memory of 5084	396	ftsearcher71.exe	92
PID 396 wrote to memory of 5084	396	ftsearcher71.exe	92
PID 5084 wrote to memory of 4092	5084	cmd.exe	94
PID 5084 wrote to memory of 4092	5084	cmd.exe	94
PID 5084 wrote to memory of 4092	5084	cmd.exe	94

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2632
- C:\Users\Admin\AppData\Local\Temp\is-49URF.tmp\is-D0A2O.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-49URF.tmp\is-D0A2O.tmp" /SL4 $10006C "C:\Users\Admin\AppData\Local\Temp\file.exe" 2749013 52736
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in Program Files directory
  - Suspicious use of WriteProcessMemory
  PID:1944
- - C:\Program Files (x86)\ftSearcher\ftsearcher71.exe
    "C:\Program Files (x86)\ftSearcher\ftsearcher71.exe"
    3⤵
    - Executes dropped EXE
    - Checks computer location settings
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:396
  - - C:\Users\Admin\AppData\Roaming\{d6dc608d-2a27-11ed-a0e3-806e6f6e6963}\lM3fHBz.exe
      4⤵
      Executes dropped EXE
      PID:3320
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "ftsearcher71.exe" /f & erase "C:\Program Files (x86)\ftSearcher\ftsearcher71.exe" & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:5084
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "ftsearcher71.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:4092

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)\ftSearcher\ftsearcher71.exe

Filesize
4.4MB

MD5
4aee2f79190dc18092962a95e6f9ccc7

SHA1
aef614914149de04e4cc3a957ca02f5e78766310

SHA256
4b964324357a9bca08d8580689c55db69581e280085af5c2c3b00abb7d275b63

SHA512
b0269e8d7309ec93377cbd6216303c19d39e6636c6b40f6e08c71e6779fcdb561fa3a23764385760b773c3c0fa5485c56cbcc7ac39a65c29d395f9a92fd2c7b3

Download Submit
C:\Program Files (x86)\ftSearcher\ftsearcher71.exe

Filesize
4.4MB

MD5
4aee2f79190dc18092962a95e6f9ccc7

SHA1
aef614914149de04e4cc3a957ca02f5e78766310

SHA256
4b964324357a9bca08d8580689c55db69581e280085af5c2c3b00abb7d275b63

SHA512
b0269e8d7309ec93377cbd6216303c19d39e6636c6b40f6e08c71e6779fcdb561fa3a23764385760b773c3c0fa5485c56cbcc7ac39a65c29d395f9a92fd2c7b3

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-49URF.tmp\is-D0A2O.tmp

Filesize
657KB

MD5
7cd12c54a9751ca6eee6ab0c85fb68f5

SHA1
76562e9b7888b6d20d67addb5a90b68b54a51987

SHA256
e82cabb027db8846c3430be760f137afa164c36f9e1b93a6e34c96de0b2c5a5f

SHA512
27ba5d2f719aaac2ead6fb42f23af3aa866f75026be897cd2f561f3e383904e89e6043bd22b4ae24f69787bd258a68ff696c09c03d656cbf7c79c2a52d8d82cc

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-49URF.tmp\is-D0A2O.tmp

Filesize
657KB

MD5
7cd12c54a9751ca6eee6ab0c85fb68f5

SHA1
76562e9b7888b6d20d67addb5a90b68b54a51987

SHA256
e82cabb027db8846c3430be760f137afa164c36f9e1b93a6e34c96de0b2c5a5f

SHA512
27ba5d2f719aaac2ead6fb42f23af3aa866f75026be897cd2f561f3e383904e89e6043bd22b4ae24f69787bd258a68ff696c09c03d656cbf7c79c2a52d8d82cc

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-LJHG2.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
C:\Users\Admin\AppData\Roaming\{d6dc608d-2a27-11ed-a0e3-806e6f6e6963}\lM3fHBz.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
C:\Users\Admin\AppData\Roaming\{d6dc608d-2a27-11ed-a0e3-806e6f6e6963}\lM3fHBz.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
memory/396-143-0x0000000000400000-0x000000000165F000-memory.dmp

Filesize
18.4MB

Download
memory/396-142-0x0000000000400000-0x000000000165F000-memory.dmp

Filesize
18.4MB

Download
memory/396-147-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download
memory/396-151-0x0000000000400000-0x000000000165F000-memory.dmp

Filesize
18.4MB

Download
memory/396-154-0x0000000000400000-0x000000000165F000-memory.dmp

Filesize
18.4MB

Download
memory/2632-132-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2632-137-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2632-155-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download

Analysis

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